CEL Codes
That is the CEL, or Check Engine Light. It could more accurately be called the Check Emissions Light as well.
What does the Check Engine Light (CEL) Mean?
The Check Engine Light, also known as a CEL or MIL (Malfunction Indicator Lamp), is a light that is lit up on the dash by the ECU when it detects something wrong. It is NOT comprehensive about everything that could go wrong. In fact, your car could be on fire and it wouldn't know. The ECU only monitors EMISSIONS (and a few safety related items), due to the US laws that were enacted in the 1990s regarding emissions and OBD2 compliance. There is a quiet push going on as of this edit to further expand the items monitored, which may result in an "OBD3" in the next 10-15 years. Also, note that it monitors far more than "the engine", for example the ECU knows if your gas cap is loose, and will throw a CEL code for a fuel system EVAP leak.
If your CEL lights up, you can clear it a few different ways:
(The quick information under the "More info" link is still under construction. It will take me a while to write all of the easy-to-understand descriptions and recommendations to troubleshoot and solve.)
The Check Engine Light, also known as a CEL or MIL (Malfunction Indicator Lamp), is a light that is lit up on the dash by the ECU when it detects something wrong. It is NOT comprehensive about everything that could go wrong. In fact, your car could be on fire and it wouldn't know. The ECU only monitors EMISSIONS (and a few safety related items), due to the US laws that were enacted in the 1990s regarding emissions and OBD2 compliance. There is a quiet push going on as of this edit to further expand the items monitored, which may result in an "OBD3" in the next 10-15 years. Also, note that it monitors far more than "the engine", for example the ECU knows if your gas cap is loose, and will throw a CEL code for a fuel system EVAP leak.
If your CEL lights up, you can clear it a few different ways:
- Disconnect the battery without reading the code to see what is wrong. This also clears your fuel trims, audio head unit presets, DSC/TCS learned parameters, and your car may idle roughly and/or stall for the next few drive cycles. If you want to avoid this rough idle, let the car idle for 10 minutes after reconnecting the battery and before you start driving anywhere.
- Go to an auto-parts store that will read the code for you for free, and then will clear it for you if you wish.
- Buy a code reader for less than a diagnostics fee at a shop, read and clear it yourself, and read all future codes on all your cars for free.
- Buy a bluetooth OBD2 adapter and pair it with your smartphone or tablet and an OBD2 app.
- Go to a shop and pay their one time diagnostic's charge to get the code for you.
- Go to a dealer and pay their even higher one time diagnostics charge to get the code, and then charge you even more for fixing it.
(The quick information under the "More info" link is still under construction. It will take me a while to write all of the easy-to-understand descriptions and recommendations to troubleshoot and solve.)
DTC # | Condition | Light | Trigger | Foxed.ca Article |
---|---|---|---|---|
P0030 | Front HO2S heater control circuit problem | ON | 1 Conditions: The PCM monitors the front HO2S impedance when under the front HO2S heater control for 200 s. If the impedance is more than 44 ohms, the PCM determines that there is a front HO2S heater control circuit problem. | P0030 @ foxed.ca |
P0031 | Front HO2S heater control circuit low | ON | 1 Conditions: The PCM monitors the front HO2S heater control voltage when the PCM turns the front HO2S heater off. If the control voltage exceeds 25 % of the battery voltage, the PCM determines that the front HO2S heater control circuit voltage is low. | P0031 @ foxed.ca |
P0032 | Front HO2S heater control circuit high | ON | 1 Conditions: The PCM monitors the front HO2S heater control voltage when the PCM turns the front HO2S heater on. If the control voltage is less than 25 % of the battery voltage, the PCM determines that the front HO2S heater control circuit voltage is high. | P0032 @ foxed.ca |
P0037 | Rear HO2S heater control circuit low | ON | 1 Conditions: The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater off. If the control voltage exceeds 57 % of the battery voltage, the PCM determines that the rear HO2S heater control circuit voltage is low. | P0037 @ foxed.ca |
P0038 | Rear HO2S heater control circuit high | ON | 1 Conditions: The PCM monitors the rear HO2S heater control voltage when the PCM turns the rear HO2S heater on. If the control voltage is less than 57 % of the battery voltage, the PCM determines that the rear HO2S heater control circuit voltage is high. | P0038 @ foxed.ca |
P0076 | VDI solenoid valve control circuit low | OFF | 1 Conditions: The PCM monitors the VDI solenoid valve control voltage when the PCM turns the VDI solenoid valve off. If the control voltage is low, the PCM determines that the VDI solenoid valve control circuit voltage is low. | P0076 @ foxed.ca |
P0077 | VDI solenoid valve control circuit high | OFF | 1 Conditions: The PCM monitors the VDI solenoid valve control voltage when the PCM turns the VDI solenoid valve on. If the control voltage is high, the PCM determines that the VDI solenoid valve control circuit voltage is high. | P0077 @ foxed.ca |
P0101 | MAF sensor circuit range/performance problem | ON | 3 Conditions: The PCM compares the actual MAF amount with the expected MAF amount when the engine is running. If the throttle opening angle is more than 50 % and the MAF amount is less than 5 g/s {0.66 lb/min}, the PCM determines that there is a MAF sensor circuit range/performance problem. If the ECT is more than 70C {158F}, the engine speed is less than 2,000 rpm and the MAF amount is more than 130 g/s {17.20 lb/min} (MT) 110 g/s {14.55 lb/min} (AT), the PCM determines that there is a MAF sensor circuit range/performance problem. | P0101 @ foxed.ca |
P0102 | MAF sensor circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the MAF sensor when the engine is running. If the input voltage is less than 0.5 V, the PCM determines that the MAF sensor circuit input voltage is low. | P0102 @ foxed.ca |
P0103 | MAF sensor circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the MAF sensor when the engine is running. If the input voltage is more than 5.0 V, the PCM determines that the MAF sensor circuit input voltage is high. | P0103 @ foxed.ca |
P0107 | BARO sensor circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the BARO sensor when the engine is running. If the input voltage is less than 0.2 V, the PCM determines that the BARO sensor circuit input voltage is low. | P0107 @ foxed.ca |
P0108 | BARO sensor circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the BARO sensor when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the BARO sensor circuit input voltage is high. | P0108 @ foxed.ca |
P0111 | IAT sensor circuit range/performance problem | ON | 1 Conditions: The PCM compares the IAT with the ECT when the engine is running. If the IAT is higher than the ECT by 40C {104F}, the PCM determines that there is an IAT sensor circuit range/performance problem. | P0111 @ foxed.ca |
P0112 | IAT sensor circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the IAT sensor when the engine is running. If the input voltage is less than 0.1 V, the PCM determines that the IAT sensor circuit input voltage is low. | P0112 @ foxed.ca |
P0113 | IAT sensor circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the IAT sensor when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the IAT sensor circuit input voltage is high. | P0113 @ foxed.ca |
P0117 | ECT sensor circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the ECT sensor when the engine is running. If the input voltage is less than 0.2 V, the PCM determines that the ECT sensor circuit input voltage is low. | P0117 @ foxed.ca |
P0118 | ECT sensor circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the ECT sensor when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the ECT sensor circuit input voltage is high. | P0118 @ foxed.ca |
P0122 | TP sensor No.1 circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the TP sensor No.1 when the engine is running. If the input voltage is less than 0.3 V, the PCM determines that the TP sensor No.1 circuit input voltage is low. | P0122 @ foxed.ca |
P0123 | TP sensor No.1 circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the TP sensor No.1 when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the TP sensor No.1 circuit input voltage is high. | P0123 @ foxed.ca |
P0125 | Insufficient coolant temperature for closed loop fuel control | ON | 1 Conditions: The PCM monitors the ECT after cold engine start. If the ECT does not reach the specification in a certain period, the PCM determines that the coolant temperature for closed loop fuel control is insufficient. | P0125 @ foxed.ca |
P0126 | Insufficient coolant temperature for stable operation | ON | 3 Conditions: The PCM monitors the ECT after the engine start for a certain period. If the ECT never exceeds 71C {160F} when the following conditions are met, the PCM determines that the coolant thermostat is stuck open. ECT at engine start: less than 51C {123F} Estimated ambient temperature: more than -10C {14F} | not found on foxed.ca |
P0130 | Front HO2S circuit problem | ON | 1 Conditions: The PCM monitors the front HO2S impedance when under the front HO2S heater control. If the impedance is more than 500 ohms, the PCM determines that there is a front HO2S circuit problem. | P0130 @ foxed.ca |
P0131 | Front HO2S circuit low voltage | ON | 1 Conditions: The PCM monitors the input voltage from the front HO2S and the front HO2S output current when the engine is running. If the input voltage is less than 1.8 V or the output current is less than -5 mA, the PCM determines that the front HO2S circuit voltage is low. | P0131 @ foxed.ca |
P0132 | Front HO2S circuit high voltage | ON | 1 Conditions: The PCM monitors the input voltage from the front HO2S and the front HO2S output current when the engine is running. If the input voltage is more than 3.8 V or the output current is more than 5 mA, the PCM determines that the front HO2S circuit voltage is high. | P0132 @ foxed.ca |
P0133 | Front HO2S circuit slow response | ON | 5 Conditions: The PCM monitors the front HO2S output current and short term fuel trim (SHRTFT) when the following conditions are met. If the output current response is lower than that expected from the fuel trim, the PCM determines that the front HO2S circuit response is slow. Front HO2S heater monitor: Completed Fuel system loop status: Closed loop fuel control Engine speed: 2,000-3,500 rpm LOAD: 30.0-50.0 % | P0133 @ foxed.ca |
P0138 | Rear HO2S circuit high voltage | ON | 1 Conditions: The PCM monitors the input voltage from the rear HO2S when the engine is running. If the input voltage is more than 1.2 V, the PCM determines that the rear HO2S circuit voltage is high. | P0138 @ foxed.ca |
P0139 | Rear HO2S circuit slow response | ON | 1 Conditions: The PCM monitors the rear HO2S inversion cycle period, lean-to-rich response time and rich-to-lean response time when under the open loop fuel control (fuel cut off control). If the average response time is more than the specification, the PCM determines that the rear HO2S circuit response is slow. | P0139 @ foxed.ca |
P0171 | System too lean | ON | 1 Conditions: The PCM monitors the short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) when under closed loop fuel control. If the fuel trim is more than the specification, the PCM determines that the system is too lean. | P0171 @ foxed.ca |
P0172 | System too rich | ON | 1 Conditions: The PCM monitors the short term fuel trim (SHRTFT) and long term fuel trim (LONGFT) when under closed loop fuel control. If the fuel trim is less than the specification, the PCM determines that the system is too rich. | P0172 @ foxed.ca |
P0222 | TP sensor No.2 circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the TP sensor No.2 when the engine is running. If the input voltage is less than 0.7 V, the PCM determines that the TP sensor No.2 circuit input voltage is low. | P0222 @ foxed.ca |
P0223 | TP sensor No.2 circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the TP sensor No.2 when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the TP sensor No.2 circuit input voltage is high. | P0223 @ foxed.ca |
P0300 | Random misfire detected | Flash/ON | 1 Conditions: The PCM monitors eccentric shaft position sensor input signal interval time. The PCM calculates the change of the interval time for each rotor. If the change of interval time exceeds the preprogrammed criteria, the PCM detects a misfire in the corresponding rotor. While the engine is running, the PCM counts the number of misfires that occurred at 200 eccentric shaft revolutions and 1,000 eccentric shaft revolutions and calculates misfire ratio for each eccentric shaft revolution. If the ratio exceeds the preprogrammed criteria, the PCM determines that a misfire, which can damage the catalytic converter or affect emission performance, has occurred. | P0300 @ foxed.ca |
P0301 | Front rotor misfire detected | Flash/ON | 1 Conditions: The PCM monitors eccentric shaft position sensor input signal interval time. The PCM calculates the change of the interval time for each rotor. If the change of interval time exceeds the preprogrammed criteria, the PCM detects a misfire in the corresponding rotor. While the engine is running, the PCM counts the number of misfires that occurred at 200 eccentric shaft revolutions and 1,000 eccentric shaft revolutions and calculates misfire ratio for each eccentric shaft revolution. If the ratio exceeds the preprogrammed criteria, the PCM determines that a misfire, which can damage the catalytic converter or affect emission performance, has occurred. | P0301 @ foxed.ca |
P0302 | Rear rotor misfire detected | Flash/ON | 1 Conditions: The PCM monitors eccentric shaft position sensor input signal interval time. The PCM calculates the change of the interval time for each rotor. If the change of interval time exceeds the preprogrammed criteria, the PCM detects a misfire in the corresponding rotor. While the engine is running, the PCM counts the number of misfires that occurred at 200 eccentric shaft revolutions and 1,000 eccentric shaft revolutions and calculates misfire ratio for each eccentric shaft revolution. If the ratio exceeds the preprogrammed criteria, the PCM determines that a misfire, which can damage the catalytic converter or affect emission performance, has occurred. | P0302 @ foxed.ca |
P0327 | KS circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the KS when the engine is running. If the input voltage is less than 1.2 V, the PCM determines that the KS circuit input voltage is low. | P0327 @ foxed.ca |
P0328 | KS circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the KS when the engine is running. If the input voltage is more than 4.0 V, the PCM determines that the KS circuit input voltage is high. | P0328 @ foxed.ca |
P0335 | Eccentric shaft position sensor circuit problem | ON | 1 Conditions: The PCM monitors the input signal from the eccentric shaft position sensor when the mass intake airflow amount is more than 2 g/s {0.26 lb/min}. If the input signal is not input, the PCM determines that there is a eccentric shaft position sensor circuit malfunction. | P0335 @ foxed.ca |
P0336 | Eccentric shaft position sensor circuit range/performance problem | ON | 1 Conditions: The PCM monitors the input signal from the eccentric shaft position sensor when the engine is running. If the input signal is not the proper pulse number, the PCM determines that there is a eccentric shaft position sensor circuit range/performance problem. | P0336 @ foxed.ca |
P0410 | AIR system problem | ON | 1 Conditions: The PCM monitors the front HO2S output current when the AIR control is operating. If the output current is more than the specification, the PCM determines that there is an AIR system problem. | P0410 @ foxed.ca |
P0420 | Catalyst system efficiency below threshold | ON | 6 Conditions: The PCM monitors the input voltage from the rear HO2S and the front HO2S output current when the following conditions are met. If the input voltage change is extremely large compared to the output current change, the PCM determines that the catalyst system has deteriorated. ECT: more than 70C {158F} Engine speed: 1,500- 3,500 rpm Catalyst converter temperature: more than 400C {752F} LOAD: 20- 50% (maximum calculated load value varies depending on engine speed.) Time with purge control system does not operate: more than 20 s | P0420 @ foxed.ca |
P0441 | EVAP system incorrect purge flow | ON | 4 Conditions: The PCM monitors the purge line vacuum, when the following conditions are met. If the vacuum between the charcoal canister and the intake manifold does not reach the specification, the PCM determines that the EVAP system purge flow is incorrect. Vehicle speed: 70.1 - 130 km/h {43.5 - 81.2 mph} Engine speed: 1,200 - 4,000 rpm Throttle valve opening angle: 10.2 - 27.7% (changes by engine speed) | not found on foxed.ca |
P0442 | EVAP system leak detected (small leak) | ON | 7 Conditions: The PCM measures the pump load current (EVAP line pressure) after a specified period has elapsed since the EVAP system is sealed when monitoring conditions are met. If the load does not reach the reference load value, or the rate of the load increase is lower than the specification within a specified period, the PCM determines that the EVAP system has a very small leak. The ignition switch is turned off. IAT: 5-40C {41-104F} Battery voltage: 11.0-14.6 V Atmospheric pressure: 72 kPa {542 mmHg, 21.33 inHg} or above Fuel tank level: 15-85% Time from engine off: more than 6 h. | not found on foxed.ca |
P0443 | Purge solenoid valve circuit problem | ON | 2 Conditions: The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the purge solenoid valve control circuit voltage is low. The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve on. If the control voltage is more than 11.5 V, the PCM determines that the purge solenoid valve control circuit voltage is high. | P0443 @ foxed.ca |
P0446 | EVAP system vent control circuit problem | ON | 1 Conditions: The PCM monitors pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the decrease in pump load current is less than the specification after the reference current value has been obtained, the PCM determines that the change over valve in the EVAP system leak detection pump has a malfunction. | not found on foxed.ca |
P0455 | EVAP system leak detected (large leak) | ON | 2 Conditions: The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the purge solenoid valve control circuit voltage is low. The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve on. If the control voltage is more than 11.5 V, the PCM determines that the purge solenoid valve control circuit voltage is high. | not found on foxed.ca |
P0456 | EVAP system leak detected (very small leak) | ON | 2 Conditions: The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the purge solenoid valve control circuit voltage is low. The PCM monitors the purge solenoid valve control voltage when the PCM turns the purge solenoid valve on. If the control voltage is more than 11.5 V, the PCM determines that the purge solenoid valve control circuit voltage is high. | not found on foxed.ca |
P0461 | Fuel gauge sender unit circuit range/performance problem | ON | 1 Conditions: The PCM monitors the fuel tank level difference before and after the PCM-calculated fuel consumption has reached more than 21 L {22.2 US qt, 18.5 Imp qt}. If the difference is less than 5 %, the PCM determines that there is a fuel gauge sender unit circuit range/performance problem. | P0461 @ foxed.ca |
P0462 | Fuel gauge sender unit (main) circuit low input | ON | 1 Conditions: The PCM monitors the fuel tank level and input voltage from the fuel gauge sender unit when the engine is running. If the input voltage is less than 2.5 V and fuel tank level is full, the PCM determines that the fuel gauge sender unit circuit input voltage is low. | P0462 @ foxed.ca |
P0463 | Fuel gauge sender unit (main) circuit high input | ON | 1 Conditions: The PCM monitors the fuel tank level and input voltage from the fuel gauge sender unit when the engine is running. If the input voltage is more than 2.5 V and fuel tank level is empty, the PCM determines that the fuel gauge sender unit circuit input voltage is high. | P0463 @ foxed.ca |
P0480 | Cooling fan No.1 control circuit problem | OFF | 2 Conditions: The PCM monitors the cooling fan relay No.1 control voltage when the PCM turns the cooling fan relay No.1 off. If the control voltage is low, the PCM determines that the cooling fan No.1 control circuit voltage is low. The PCM monitors the cooling fan relay No.1 control voltage when the PCM turns the cooling fan relay No.1 on. If the control voltage is high, the PCM determines that the cooling fan No.1 control circuit voltage is high. | P0480 @ foxed.ca |
P0481 | Cooling fan No.2 control circuit problem | OFF | 2 Conditions: The PCM monitors the cooling fan relay No.2 control voltage when the PCM turns the cooling fan relay No.2 off. If the control voltage is low, the PCM determines that the cooling fan No.2 control circuit voltage is low. The PCM monitors the cooling fan relay No.2 control voltage when the PCM turns the cooling fan relay No.2 on. If the control voltage is high, the PCM determines that the cooling fan No.2 control circuit voltage is high. | P0481 @ foxed.ca |
P0500 | VSS circuit problem | ON | 4 Conditions: The PCM monitors the input signal from the vehicle speed sensor when the following conditions are met. If the input signal is less than 3.7 km/h {2.3 mph}, the PCM determines that there is a VSS circuit malfunction. Shift lever position: gear is not in neutral position Engine speed: more than 2,500 rpm LOAD: more than 40.0 % | P0500 @ foxed.ca |
P0505 | Idle air control system problem | OFF | 1 Conditions: The PCM cannot control idle speed at the target idle speed during the self-test. | P0505 @ foxed.ca |
P0506 | Idle air control system RPM lower than expected | ON | 1 Conditions: The PCM compares the actual idle speed with the target idle speed when the engine is running. If the actual idle speed is lower than targeted by 100 rpm, the PCM determines that the idle air control system RPM is lower than expected. | not found on foxed.ca |
P0507 | Idle air control system RPM higher than expected | ON | 1 Conditions: The PCM compares the actual idle speed with the target idle speed when the engine is running. If the actual idle speed is higher than targeted by 200 rpm, the PCM determines that the idle air control system RPM is higher than expected. | not found on foxed.ca |
P0562 | System voltage low (KAM) | ON | 1 Conditions: The PCM monitors the battery voltage when the engine is running. If the voltage is less than 2.5 V, the PCM determines that the system voltage is low. | P0562 @ foxed.ca |
P0564 | Cruise control switch input circuit problem | OFF | 1 Conditions: The PCM monitors the input voltage from the cruise control switch when the engine is running. If the input voltage is less than 3.0 V for more than 2 min, the PCM determines that there is a cruise control switch input circuit problem. | P0564 @ foxed.ca |
P0571 | Brake switch input circuit problem | OFF | 1 Conditions: The PCM monitors the input signal from brake switch No.1 and brake switch No.2 when the engine is running. If the both input signals remain on or off, the PCM determines that there is a brake switch input circuit problem. | P0571 @ foxed.ca |
P0601 | PCM memory check sum error | ON | 1 Conditions: PCM internal memory check sum error. | P0601 @ foxed.ca |
P0602 | PCM programming error | ON | 1 Conditions: No configuration data in the PCM. | P0602 @ foxed.ca |
P0604 | PCM random access memory error | ON | 1 Conditions: PCM internal random access memory error. | P0604 @ foxed.ca |
P0610 | PCM vehicle options error | ON | 1 Conditions: PCM data configuration error. | P0610 @ foxed.ca |
P0638 | Throttle actuator control circuit range/performance problem | ON | 1 Conditions: The PCM compares the actual TP with the target TP when the engine is running. If the difference is more than the specification, the PCM determines that there is a throttle actuator control circuit range/performance problem. | P0638 @ foxed.ca |
P0661 | SSV solenoid valve control circuit low | ON | 1 Conditions: The PCM monitors the SSV solenoid valve control voltage when the PCM turns the SSV solenoid valve off. If the control voltage is less than 5.8 V, the PCM determines that the SSV solenoid valve control circuit voltage is low. | P0661 @ foxed.ca |
P0662 | SSV solenoid valve control circuit high | ON | 1 Conditions: The PCM monitors the SSV solenoid valve control voltage when the PCM turns the SSV solenoid valve on. If the control voltage is more than 11.5 V, the PCM determines that the SSV solenoid valve control circuit voltage is high. | P0662 @ foxed.ca |
P0703 | Brake switch input circuit problem | ON | 3 Conditions: The PCM monitors the input signal from the brake switch No.2 when the following conditions are met. If the input signal does not change while alternately accelerating and decelerating 8 times, the PCM determines that there is a brake switch No.2 input circuit malfunction. Vehicle speed: decelerating more than 30 km/h {19 mph} to 0 km/h {0 mph} Deceleration rate: more than 4 km/h {2 mph} per s | P0703 @ foxed.ca |
P0704 | CPP switch input circuit problem | ON | 1 Conditions: The PCM monitors the input signal from the CPP switch when the vehicle speed is more than 30 km/h {19 mph}. If the input signal does not change while alternately accelerating and decelerating 10 times, the PCM determines that there is a CPP switch input circuit malfunction. | P0704 @ foxed.ca |
P0850 | Neutral switch input circuit problem | ON | 1 Conditions: The PCM monitors the input signal from the neutral switch when the vehicle is running. If the input signal does not change while alternately running more than 30 km/h {19 mph} 8 times, the PCM determines that there is a neutral switch input circuit malfunction. | P0850 @ foxed.ca |
P1260 | Immobilizer system problem | OFF | 1 Conditions: The keyless unit detects an immobilizer system malfunction. | P1260 @ foxed.ca |
P1574 | TP sensor output incongruent | ON | 1 Conditions: The PCM compares the TP from TP sensor No.1 with the TP from TP sensor No.2 when the engine is running. If the difference is more than the specification, the PCM determines that the TP sensor outputs are incongruent. | P1574 @ foxed.ca |
P1577 | APP sensor output incongruent | ON | 1 Conditions: The PCM compares the APP from APP sensor No.1 with the APP from APP sensor No.2 when the engine is running. If the difference is more than the specification, the PCM determines that the APP sensor outputs are incongruent. | P1577 @ foxed.ca |
P1686 | Metering oil pump control circuit low flow side problem | ON | 1 Conditions: The PCM monitors the input signal from the metering oil pump switch when the metering oil pump stepping motor is more than the standard step. If the input signal is off, the PCM determines that the metering oil pump control circuit has a problem on the low flow side. | P1686 @ foxed.ca |
P1687 | Metering oil pump control circuit high flow side problem | ON | 1 Conditions: The PCM monitors the input signal from the metering oil pump switch when the metering oil pump stepping motor is less than the standard step. If the input signal is on, the PCM determines that the metering oil pump control circuit has a problem on the high flow side. | P1687 @ foxed.ca |
P1688 | Metering oil pump control circuit initial check problem | ON | 1 Conditions: The PCM monitors the input signal from the metering oil pump switch when the metering oil pump stepping motor initial check is operating. If the input signal is on, the PCM determines that there is a metering oil pump control circuit initial check problem. | P1688 @ foxed.ca |
P2004 | APV stuck open | ON | 1 Conditions: | not found on foxed.ca |
P2006 | APV motor control driver IC problem | ON | 1 Conditions: APV motor control IC error. | P2006 @ foxed.ca |
P2008 | APV motor control circuit/open | 1 Conditions: The PCM monitors the APV motor control current when the engine is running. If the control current is less than 0.1 A or more than 10 A, the PCM determines that there is an APV motor control open circuit. | P2008 @ foxed.ca | |
P2009 | APV motor control circuit low input | ON | 1 Conditions: The PCM monitors the APV motor control current when the engine is running. If the control current is less than 0.1 A, the PCM determines that there is an APV motor control circuit malfunction. | not found on foxed.ca |
P2010 | APV motor control circuit high input | ON | 1 Conditions: The PCM monitors the APV motor control current when the engine is running. If the control current is more than 10 A, the PCM determines that there is an APV motor control circuit malfunction. | not found on foxed.ca |
P2016 | APV position sensor circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the APV position sensor when the engine is running. If the input voltage is less than 0.2 V, the PCM determines that the APV position sensor circuit input voltage is low. | not found on foxed.ca |
P2017 | APV position sensor circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the APV position sensor when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the APV position sensor circuit input voltage is high. | not found on foxed.ca |
P2067 | Fuel gauge sender unit (sub) circuit low input | ON | 1 Conditions: The PCM monitors the fuel tank level and input voltage from the fuel gauge sender unit (sub) when the engine is running. If the input voltage is less than 0.78 V and fuel tank level is full, the PCM determines that the fuel gauge sender unit (sub) circuit input voltage is low. | not found on foxed.ca |
P2068 | Fuel gauge sender unit (sub) circuit high input | ON | 1 Conditions: The PCM monitors the fuel tank level and input voltage from the fuel gauge sender unit (sub) when the engine is running. If the input voltage is more than 4.9 V and fuel tank level is empty, the PCM determines that the fuel gauge sender unit (sub) circuit input voltage is high. | not found on foxed.ca |
P2070 | SSV stuck open | ON | 1 Conditions: The PCM monitors the input signal from the SSV switch when the PCM turns the SSV solenoid valve off. If the input signal is on, the PCM determines that the SSV is stuck open. | not found on foxed.ca |
P2096 | Target A/F feedback system too lean | ON | 1 Conditions: The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is more than the specification, the PCM determines that the target A/F feedback system is too lean. | P2096 @ foxed.ca |
P2097 | Target A/F feedback system too rich | ON | 1 Conditions: The PCM monitors the target A/F fuel trim when under the target A/F feedback control. If the fuel trim is less than the specification, the PCM determines that the target A/F feedback system is too rich | P2097 @ foxed.ca |
P2101 | Drive-by-wire relay control circuit problem | ON | 2 Conditions: The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay on. If the input voltage is less than 5.0 V, the PCM determines that the drive-by-wire relay control circuit voltage is low. The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay off. If the input voltage is more than 5.0 V, the PCM determines that the drive-by-wire relay control circuit voltage is high. | P2101 @ foxed.ca |
P2102 | Throttle actuator power supply line circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay on. If the input voltage is less than 5.0 V, the PCM determines that the drive-by-wire relay control circuit voltage is low. | not found on foxed.ca |
P2103 | Throttle actuator power supply line circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the drive-by-wire relay when the PCM turns the drive-by-wire relay off. If the input voltage is more than 5.0 V, the PCM determines that the drive-by-wire relay control circuit voltage is high. | not found on foxed.ca |
P2106 | Throttle actuator control system-forced limited power | ON | 1 Conditions: The PCM monitors the throttle actuator control current when the ignition switch is on. If the control current is less than 8 A or more than 11 A, the PCM determines that the throttle actuator control system is under forced limited power. | P2106 @ foxed.ca |
P2107 | Throttle actuator control module processor error | ON | 1 Conditions: Throttle actuator control module internal processor error. | P2107 @ foxed.ca |
P2108 | Throttle actuator control module performance error | ON | 1 Conditions: Throttle actuator control module internal communication error. | P2108 @ foxed.ca |
P2109 | TP sensor minimum stop range/performance problem | ON | 1 Conditions: The PCM monitors the minimum TP when the closed TP learning is completed. If the TP is less than 11.5 % or more than 24.3 %, the PCM determines that there is a TP sensor minimum stop range/performance problem. | P2109 @ foxed.ca |
P2112 | Throttle actuator control system range/performance problem | ON | 1 Conditions: The PCM monitors the throttle actuator control duty ratio when the engine is running. If the duty ratio is more than 95 %, the PCM determines that there is a throttle actuator control system range/performance problem. | P2112 @ foxed.ca |
P2119 | Throttle actuator control throttle body range/performance problem | ON | 1 Conditions: The PCM compares the TP with default TP when the ignition switch is turned off. If the TP is higher than the default TP, the PCM determines that there is a throttle actuator control throttle body range/performance problem. | P2119 @ foxed.ca |
P2122 | APP sensor No.1 circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the APP sensor No.1 when the engine is running. If the input voltage is less than 0.3 V, the PCM determines that the APP sensor No.1 circuit input voltage is low. | P2122 @ foxed.ca |
P2123 | APP sensor No.1 circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the APP sensor No.1 when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the APP sensor No.1 circuit input voltage is high. | P2123 @ foxed.ca |
P2127 | APP sensor No.2 circuit low input | ON | 1 Conditions: The PCM monitors the input voltage from the APP sensor No.2 when the engine is running. If the input voltage is less than 0.3 V, the PCM determines that the APP sensor No.2 circuit input voltage is low. | P2127 @ foxed.ca |
P2128 | APP sensor No.2 circuit high input | ON | 1 Conditions: The PCM monitors the input voltage from the APP sensor No.2 when the engine is running. If the input voltage is more than 4.8 V, the PCM determines that the APP sensor No.2 circuit input voltage is high. | P2128 @ foxed.ca |
P2135 | TP sensor No.1/No.2 voltage correlation problem | ON | 1 Conditions: The PCM compares the input voltage from TP sensor No.1 with the input voltage from TP sensor No.2 when the engine is running. If the difference is more than the specification, the PCM determines that there is a TP sensor No.1/No.2 voltage correlation problem. | P2135 @ foxed.ca |
P2136 | TP sensor No.1/No.3 voltage correlation problem | ON | 1 Conditions: The PCM compares the input voltage from TP sensor No.1 with the input voltage from TP sensor No.3 (calculation value in PCM) when the engine is running. If the difference is more than the specification, the PCM determines that there is a TP sensor No.1/No.3 voltage correlation problem. | P2136 @ foxed.ca |
P2138 | APP sensor No.3 /No.4 voltage correlation problem | ON | 1 Conditions: The PCM compares the input voltage from APP sensor No.1 with the input voltage from APP sensor No.2 when the engine is running. If the difference is more than the specification, the PCM determines that there is an APP sensor No.1/No.2 voltage correlation problem. | P2138 @ foxed.ca |
P2195 | Front HO2S signal stuck lean | ON | 6 Conditions: The PCM monitors the front HO2S output current when the following conditions are met. If the average output current is more than 1.2 A for 25 s, the PCM determines that the front HO2S signal remains lean. ECT: more than 70C {158F} Engine speed: 1,000-3,200 rpm MAF amount: 6-80 g/s {0.80-10.58 lb/min} Target A/F feedback system status: feedback control Input voltage from the rear HO2S: more than 0.7 V | P2195 @ foxed.ca |
P2196 | Front HO2S signal stuck rich | ON | 6 Conditions: The PCM monitors the front HO2S output current when the following conditions are met. If the average output current is less than 0.8 A for 25 s, the PCM determines that the front HO2S signal remains rich. ECT: more than 70C {158F} Engine speed: 1,000-3,200 rpm MAF amount: 6-80 g/s {0.80-10.58 lb/min} Target A/F feedback system status: feedback control Input voltage from the rear HO2S: less than 0.2 V | P2196 @ foxed.ca |
P2257 | AIR pump relay control circuit low | ON | 1 Conditions: The PCM monitors the AIR pump relay control voltage when the AIR pump is not operating. If the control voltage is less than 5.8 V, the PCM determines that the AIR pump relay control circuit voltage is low. | P2257 @ foxed.ca |
P2258 | AIR pump relay control circuit high | ON | 1 Conditions: The PCM monitors the AIR pump relay control voltage when the AIR pump is operating. If the control voltage is more than 11.5 V, the PCM determines that the AIR pump relay control circuit voltage is high. | P2258 @ foxed.ca |
P2259 | AIR solenoid valve control circuit low | ON | 1 Conditions: The PCM monitors the AIR solenoid valve control voltage when the AIR pump is not operating. If the control voltage is less than 5.8 V, the PCM determines that the AIR solenoid valve control circuit voltage is low. | P2259 @ foxed.ca |
P2260 | AIR solenoid valve control circuit high | ON | 1 Conditions: The PCM monitors the AIR solenoid valve control voltage when the AIR pump is operating. If the control voltage is more than 11.5 V, the PCM determines that the AIR solenoid valve control circuit voltage is high | P2260 @ foxed.ca |
P2270 | Rear HO2S signal stuck lean | ON | 7 Conditions: The PCM monitors the input voltage from the rear HO2S when the following conditions are met. If the input voltage is more than 0.9 V for 40 s, the PCM determines that the rear HO2S signal remains lean. ECT: more than 70C {158F} Engine speed: more than 1,500 rpm MAF amount: more than 10 g/s {1.32 lb/min} Short term fuel trim: -20-20 % Long term fuel trim: -15-15 % Target A/F feedback system status: feedback control | P2270 @ foxed.ca |
P2271 | Rear HO2S signal stuck rich | ON | 7 Conditions: The PCM monitors the input voltage from the rear HO2S when the following conditions are met. If the input voltage is less than 0.4 V for 40 s, the PCM determines that the rear HO2S signal remains rich. ECT: more than 70C {158F} Engine speed: more than 1,500 rpm MAF amount: more than 10 g/s {1.32 lb/min} Short term fuel trim: -20-20 % Long term fuel trim: -15-15 % Target A/F feedback system status: feedback control | P2271 @ foxed.ca |
P2401 | EVAP system leak detection pump control circuit low | ON | 1 Conditions: The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the pump load current is less than the specification, the PCM determines that the EVAP system leak detection pump control circuit voltage is low. | not found on foxed.ca |
P2402 | EVAP system leak detection pump control circuit high | ON | 1 Conditions: The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the pump load current is more than the specification, the PCM determines that the EVAP system leak detection pump control circuit voltage is high. | not found on foxed.ca |
P2404 | EVAP system leak detection pump sense circuit range/performance problem | ON | 1 Conditions: The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the time in which the pump load current reaches the reference current value is not within the specification after the PCM obtains the reference current value, the PCM determines that there is an EVAP system leak detection pump sense circuit range/performance problem. | not found on foxed.ca |
P2405 | EVAP system leak detection pump sense circuit low | ON | 1 Conditions: The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the pump load current is less than the specification while the PCM obtains the reference current value, the PCM determines that the EVAP system leak detection pump sense circuit voltage is low. | not found on foxed.ca |
P2407 | EVAP system leak detection pump sense circuit intermittent/erratic problem | ON | 2 Conditions: The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the change in pump load current is more than the specification while the PCM obtains the reference current value 6 times, the PCM determines that there is an EVAP system leak detection pump sense circuit intermittent/erratic problem. The PCM monitors the pump load current (EVAP line pressure) when the evaporative leak monitor is operating. If the pump load current is kept less than the maximum pump load current after the PCM obtains the reference current value 6 times, the PCM determines that there is an EVAP system leak detection pump sense circuit intermittent/erratic problem. | not found on foxed.ca |
P2502 | Charging system voltage problem | OFF | 1 Conditions: The PCM monitors the generator output voltage and the battery voltage when the engine is running. If the generator output voltage is more than 16.9 V and the battery voltage is less than 10.9 V, the PCM determines that there is a charging system voltage malfunction. | P2502 @ foxed.ca |
P2503 | Charging system voltage low | OFF | 1 Conditions: The PCM monitors the generator output voltage when the engine is running. If the generator output voltage is less than 8.5 V while the PCM needs more than 19.5 A from the generator, the PCM determines that the charging system voltage is low. | P2503 @ foxed.ca |
P2504 | Charging system voltage high | OFF | 1 Conditions: The PCM monitors the generator output voltage and the battery voltage when the engine is running. If the generator output voltage is more than 18.4 V or the battery voltage is more than 15.9 V, the PCM determines that the charging system voltage is high. | P2504 @ foxed.ca |
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Most of the contents of this site are accumulated from the collective community wisdom of RX8Club.com.
Other content is republished under public license or paid license. Please contact me prior to reproducing or reusing any content.
Most of the contents of this site are accumulated from the collective community wisdom of RX8Club.com.
Other content is republished under public license or paid license. Please contact me prior to reproducing or reusing any content.