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9,253 diagnostic guides

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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.

Check soon 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 5473–5496 of 6682

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P2ADBReductant Tank Temperature Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ADB relates to reductant tank temperature sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ADCReductant Tank Temperature Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ADC relates to reductant tank temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ADDReductant Tank Temperature Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ADD relates to reductant tank temperature sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ADEReductant Tank Temperature Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2ADE relates to reductant tank temperature sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2ADFIntake Air System Leak Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2ADF relates to intake air system leak bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE0Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE0 relates to intake air o2 sensor pumping current trim circuit open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE1Intake Air O2 Sensor Pumping Current Trim Circuit Low Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE1 relates to intake air o2 sensor pumping current trim circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE2Intake Air O2 Sensor Pumping Current Trim Circuit High Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE2 relates to intake air o2 sensor pumping current trim circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE3Intake Air O2 Sensor Pumping Current Circuit Open Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE3 relates to intake air o2 sensor pumping current circuit open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE4Intake Air O2 Sensor Pumping Current Circuit Low Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE4 relates to intake air o2 sensor pumping current circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE5Intake Air O2 Sensor Pumping Current Circuit High Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE5 relates to intake air o2 sensor pumping current circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE6Intake Air O2 Sensor Negative Current Control Circuit Open Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE6 relates to intake air o2 sensor negative current control circuit open bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE7Intake Air O2 Sensor Negative Current Control Circuit Low Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE7 relates to intake air o2 sensor negative current control circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE8Intake Air O2 Sensor Negative Current Control Circuit High Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE8 relates to intake air o2 sensor negative current control circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AE9Intake Air O2 Sensor Pumping Current Trim Circuit Open Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AE9 relates to intake air o2 sensor pumping current trim circuit open bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AEAIntake Air O2 Sensor Pumping Current Trim Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AEA relates to intake air o2 sensor pumping current trim circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AEBIntake Air O2 Sensor Pumping Current Trim Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AEB relates to intake air o2 sensor pumping current trim circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AECIntake Air O2 Sensor Pumping Current Circuit Open Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AEC relates to intake air o2 sensor pumping current circuit open bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AEDIntake Air O2 Sensor Pumping Current Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AED relates to intake air o2 sensor pumping current circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AEEIntake Air O2 Sensor Pumping Current Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AEE relates to intake air o2 sensor pumping current circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AEFIntake Air O2 Sensor Negative Current Control Circuit Open Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AEF relates to intake air o2 sensor negative current control circuit open bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF0Intake Air O2 Sensor Negative Current Control Circuit Low Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AF0 relates to intake air o2 sensor negative current control circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF1Intake Air O2 Sensor Negative Current Control Circuit High Bank 2Check soonSensors & Electronics30–120 minutes for initial diagnosisP2AF1 relates to intake air o2 sensor negative current control circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P2AF2Starter Relay C Control Circuit/OpenCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2AF2 relates to starter relay c control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.