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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 6001–6024 of 6682

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P2D05Motor Electronics Coolant Pump B Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2D05 relates to motor electronics coolant pump b stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D07Motor Electronics Coolant Pump B UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2D07 relates to motor electronics coolant pump b underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D08Motor Electronics Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2D08 relates to motor electronics coolant pump b supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D09Motor Electronics Coolant Pump B Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2D09 relates to motor electronics coolant pump b control module overtemperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D0AMotor Electronics Coolant Pump C Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2D0A relates to motor electronics coolant pump c stuck/stalled. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D0CMotor Electronics Coolant Pump C UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2D0C relates to motor electronics coolant pump c underspeed. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D0DMotor Electronics Coolant Pump C Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosisP2D0D relates to motor electronics coolant pump c supply voltage circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D0EMotor Electronics Coolant Pump C Control Module OvertemperatureCheck soonEngine Problems30–120 minutes for initial diagnosisP2D0E relates to motor electronics coolant pump c control module overtemperature. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D0FEngine Pre-Ignition Above ThresholdCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D0F relates to engine pre-ignition above threshold. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D10Engine Pre-Ignition Above Threshold - Forced Limited PowerCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D10 relates to engine pre-ignition above threshold - forced limited power. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D11Exhaust Flow Control Valve A Position Not LearnedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D11 relates to exhaust flow control valve a position not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D12Exhaust Flow Control Valve B Position Not LearnedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D12 relates to exhaust flow control valve b position not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D13Exhaust Flow Control Valve C Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D13 relates to exhaust flow control valve c control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D14Exhaust Flow Control Valve C Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D14 relates to exhaust flow control valve c control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D15Exhaust Flow Control Valve C Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D15 relates to exhaust flow control valve c control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D16Exhaust Flow Control Valve C Control PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D16 relates to exhaust flow control valve c control performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D17Exhaust Flow Control Valve C Position CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D17 relates to exhaust flow control valve c position circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D18Exhaust Flow Control Valve C Position Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D18 relates to exhaust flow control valve c position circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D19Exhaust Flow Control Valve C Position Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D19 relates to exhaust flow control valve c position circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D1AExhaust Flow Control Valve C Position Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D1A relates to exhaust flow control valve c position circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D1BExhaust Flow Control Valve C Position Not LearnedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D1B relates to exhaust flow control valve c position not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D1CCold Start EGR A/B Ratio PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2D1C relates to cold start egr a/b ratio performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D1DReductant System Leak Detected – Small LeakCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D1D relates to reductant system leak detected – small leak. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D1EReductant System Leak Detected – Large LeakCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2D1E relates to reductant system leak detected – large leak. Check the fault conditions and vehicle-specific procedure before replacing parts.