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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.

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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 1489–1512 of 1797

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P2A07O2 Sensor Negative Voltage Bank 1 Sensor 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2A07 relates to o2 sensor negative voltage bank 1 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A08O2 Sensor Negative Voltage Bank 1 Sensor 3Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2A08 relates to o2 sensor negative voltage bank 1 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A09O2 Sensor Negative Voltage Bank 2 Sensor 1Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2A09 relates to o2 sensor negative voltage bank 2 sensor 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A10O2 Sensor Negative Voltage Bank 2 Sensor 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2A10 relates to o2 sensor negative voltage bank 2 sensor 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A11O2 Sensor Negative Voltage Bank 2 Sensor 3Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2A11 relates to o2 sensor negative voltage bank 2 sensor 3. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A32AFCM Power Relay Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2A32 relates to afcm power relay control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A33AFCM Power Relay Control Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2A33 relates to afcm power relay control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A34AFCM Power Relay Control Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2A34 relates to afcm power relay control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A35AFCM Power Relay Sense CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2A35 relates to afcm power relay sense circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A36AFCM Power Relay Sense Circuit LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2A36 relates to afcm power relay sense circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2A37AFCM Power Relay Sense Circuit HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2A37 relates to afcm power relay sense circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ABFIntake Air O2 Sensor Reference Voltage Circuit/Open Bank 1Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2ABF relates to intake air o2 sensor reference voltage circuit/open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC0Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 1Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC0 relates to intake air o2 sensor reference voltage circuit range/performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC1Intake Air O2 Sensor Reference Voltage Circuit Low Bank 1Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC1 relates to intake air o2 sensor reference voltage circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC2Intake Air O2 Sensor Reference Voltage Circuit High Bank 1Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC2 relates to intake air o2 sensor reference voltage circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC3Intake Air O2 Sensor Reference Voltage Circuit/Open Bank 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC3 relates to intake air o2 sensor reference voltage circuit/open bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC4Intake Air O2 Sensor Reference Voltage Circuit Range/Performance Bank 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC4 relates to intake air o2 sensor reference voltage circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC5Intake Air O2 Sensor Reference Voltage Circuit Low Bank 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC5 relates to intake air o2 sensor reference voltage circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AC6Intake Air O2 Sensor Reference Voltage Circuit High Bank 2Check soonElectrical & Charging System30–120 minutes for initial diagnosisP2AC6 relates to intake air o2 sensor reference voltage circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD1Throttle/Pedal Position Sensor/Switch C/G Voltage CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AD1 relates to throttle/pedal position sensor/switch c/g voltage correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD2Throttle/Pedal Position Sensor/Switch B/G Voltage CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AD2 relates to throttle/pedal position sensor/switch b/g voltage correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD3Throttle/Pedal Position Sensor/Switch A/G Voltage CorrelationCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AD3 relates to throttle/pedal position sensor/switch a/g voltage correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD4Intermediate System Voltage LowCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AD4 relates to intermediate system voltage low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AD5Intermediate System Voltage HighCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AD5 relates to intermediate system voltage high. Check the fault conditions and vehicle-specific procedure before replacing parts.