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Rough idle or shakingVibration while stopped Hard to startLong cranking or no-start Engine stallsCuts out at idle or on the road Hesitates or loses powerSlow response when accelerating Battery light is onCharging system warning Harsh gear changesDelayed or rough shifting

A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.

Electrical & Charging System P · Powertrain Clear all

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Engine1049 Emissions515 Fuel1016 Sensors & Electronics2110 Transmission866 Electrical & Charging1797 Body & Restraints193 Chassis & Brakes479 Network & Communication1228

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All severities9253 Low priority305 Check soon8256 Urgent621

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All families9253 P · Powertrain7353 B · Body193 C · Chassis479 U · Network1228

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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 1441–1464 of 1797

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P22BDO2 Sensor Reference Voltage Circuit Low Bank 2 Sensor 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP22BD relates to o2 sensor reference voltage circuit low bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P22BEO2 Sensor Reference Voltage Circuit High Bank 2 Sensor 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP22BE relates to o2 sensor reference voltage circuit high bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P23B6NOx Sensor Supply Voltage Circuit Bank 1 Sensor 3Check soonElectrical & Charging System30–120 minutes for initial diagnosisP23B6 relates to nox sensor supply voltage circuit bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P24EANH3 Sensor Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP24EA relates to nh3 sensor supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P24EBNH3 Sensor Supply Voltage Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP24EB relates to nh3 sensor supply voltage circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P24ECNH3 Sensor Supply Voltage Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP24EC relates to nh3 sensor supply voltage circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2500Generator Lamp/L-Terminal Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2500 relates to generator lamp/l-terminal circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2501Generator Lamp/L-Terminal Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2501 relates to generator lamp/l-terminal circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2502Charging System VoltageCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2502 relates to charging system voltage. Check the fault conditions and vehicle-specific procedure before replacing parts.P2503Charging System Voltage LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2503 relates to charging system voltage low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2504Charging System Voltage HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2504 relates to charging system voltage high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2510ECM/PCM Power Relay Sense Circuit Range/PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2510 relates to ecm/pcm power relay sense circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2511ECM/PCM Power Relay Sense Circuit IntermittentCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2511 relates to ecm/pcm power relay sense circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P25FFElectrical System Voltage Stabilizer Control Module PerformanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP25FF relates to electrical system voltage stabilizer control module performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P262CSensor Reference Voltage G Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262C relates to sensor reference voltage g circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P262DSensor Reference Voltage G Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262D relates to sensor reference voltage g circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P262ESensor Reference Voltage G Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262E relates to sensor reference voltage g circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P262FSensor Reference Voltage G Circuit Range/PerfomanceCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP262F relates to sensor reference voltage g circuit range/perfomance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2669Actuator Supply Voltage B Circuit /OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2669 relates to actuator supply voltage b circuit /open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2670Actuator Supply Voltage B Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2670 relates to actuator supply voltage b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2671Actuator Supply Voltage B Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2671 relates to actuator supply voltage b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2684Actuator Supply Voltage C Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2684 relates to actuator supply voltage c circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2685Actuator Supply Voltage C Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2685 relates to actuator supply voltage c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2686Actuator Supply Voltage C Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2686 relates to actuator supply voltage c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.