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Find codes by symptomChoose what you notice to search matching code guides.

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 913–936 of 975

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P2C9DFuel Pressure Regulator C Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2C9D relates to fuel pressure regulator c exceeded control limits - pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9EFuel Pressure Regulator C Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2C9E relates to fuel pressure regulator c exceeded control limits - pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2C9FFuel Pressure Regulator D Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2C9F relates to fuel pressure regulator d exceeded control limits - pressure too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CA0Fuel Pressure Regulator D Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2CA0 relates to fuel pressure regulator d exceeded control limits - pressure too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2CDAAlternative Fuel Tank A Vacuum Insulation DeterioratedCheck soonFuel System30–120 minutes for initial diagnosisP2CDA relates to alternative fuel tank a vacuum insulation deteriorated. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D51Air Assisted Injector Control CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2D51 relates to air assisted injector control circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2D86Fuel Temperature Sensor A/B CorrelationCheck soonFuel System30–120 minutes for initial diagnosisP2D86 relates to fuel temperature sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD5Fuel Injection Quantity B Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD5 relates to fuel injection quantity b lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD6Fuel Injection Quantity B Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD6 relates to fuel injection quantity b higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD7Cold Start Fuel Injection Quantity B Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD7 relates to cold start fuel injection quantity b lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DD8Cold Start Fuel Injection Quantity B Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DD8 relates to cold start fuel injection quantity b higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DDCFuel Injection Quantity C Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DDC relates to fuel injection quantity c lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DDDFuel Injection Quantity C Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DDD relates to fuel injection quantity c higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DDEFuel Injection Quantity D Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DDE relates to fuel injection quantity d lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DDFFuel Injection Quantity D Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DDF relates to fuel injection quantity d higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DE0Cold Start Fuel Injection Quantity C Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DE0 relates to cold start fuel injection quantity c lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DE1Cold Start Fuel Injection Quantity C Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DE1 relates to cold start fuel injection quantity c higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DE2Cold Start Fuel Injection Quantity D Lower Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DE2 relates to cold start fuel injection quantity d lower than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2DE3Cold Start Fuel Injection Quantity D Higher Than ExpectedCheck soonFuel System30–120 minutes for initial diagnosisP2DE3 relates to cold start fuel injection quantity d higher than expected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E58Alternative Fuel Random/Multiple Cylinder Misfire DetectedCheck soonFuel System30–120 minutes for initial diagnosisP2E58 relates to alternative fuel random/multiple cylinder misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E59Cylinder 1 Alternative Fuel Misfire DetectedCheck soonFuel System30–120 minutes for initial diagnosisP2E59 relates to cylinder 1 alternative fuel misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E5ACylinder 2 Alternative Fuel Misfire DetectedCheck soonFuel System30–120 minutes for initial diagnosisP2E5A relates to cylinder 2 alternative fuel misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E5BCylinder 3 Alternative Fuel Misfire DetectedCheck soonFuel System30–120 minutes for initial diagnosisP2E5B relates to cylinder 3 alternative fuel misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P2E5CCylinder 4 Alternative Fuel Misfire DetectedCheck soonFuel System30–120 minutes for initial diagnosisP2E5C relates to cylinder 4 alternative fuel misfire detected. Check the fault conditions and vehicle-specific procedure before replacing parts.