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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 1081–1104 of 7353

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P04D2EGR Temperature Sensor C Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP04D2 relates to egr temperature sensor c circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D3Exhaust Brake Input CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04D3 relates to exhaust brake input circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D4Exhaust Brake Input Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04D4 relates to exhaust brake input circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D5Exhaust Brake Input Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04D5 relates to exhaust brake input circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D6Exhaust Brake Input Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04D6 relates to exhaust brake input circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D7Exhaust Brake Input Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04D7 relates to exhaust brake input circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D8Excessive Time To Enter Closed Loop EGR ControlCheck soonEmissions System30–120 minutes for initial diagnosisP04D8 relates to excessive time to enter closed loop egr control. Check the fault conditions and vehicle-specific procedure before replacing parts.P04D9Closed Loop EGR Control At Limit - Flow Too LowCheck soonEmissions System30–120 minutes for initial diagnosisP04D9 relates to closed loop egr control at limit - flow too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DAClosed Loop EGR Control At Limit - Flow Too HighCheck soonEmissions System30–120 minutes for initial diagnosisP04DA relates to closed loop egr control at limit - flow too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DBCrankcase Ventilation System DisconnectedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04DB relates to crankcase ventilation system disconnected. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DCFuel Fill Door Position Sensor/Switch Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP04DC relates to fuel fill door position sensor/switch circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DDCold Start EGR A Flow Insufficient DetectedCheck soonEmissions System30–120 minutes for initial diagnosisP04DD relates to cold start egr a flow insufficient detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DECold Start EGR A Flow Excessive DetectedCheck soonEmissions System30–120 minutes for initial diagnosisP04DE relates to cold start egr a flow excessive detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P04DFEVAP System Purge Control Valve A Performance/Stuck OpenLow priorityEmissions System30–120 minutes for initial diagnosisP04DF relates to evap system purge control valve a performance/stuck open. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E0EVAP System Purge Control Valve A Stuck ClosedLow priorityEmissions System30–120 minutes for initial diagnosisP04E0 relates to evap system purge control valve a stuck closed. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E1Crankcase Ventilation Hose Connection Sensor CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04E1 relates to crankcase ventilation hose connection sensor circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E2Crankcase Ventilation Hose Connection Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04E2 relates to crankcase ventilation hose connection sensor circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E3Crankcase Ventilation Hose Connection Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04E3 relates to crankcase ventilation hose connection sensor circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E4Crankcase Ventilation Hose Connection Sensor Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP04E4 relates to crankcase ventilation hose connection sensor circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E5EGR Temperature Sensor D CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP04E5 relates to egr temperature sensor d circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E6EGR Temperature Sensor D Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP04E6 relates to egr temperature sensor d circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E7EGR Temperature Sensor D Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP04E7 relates to egr temperature sensor d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E8EGR Temperature Sensor D Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP04E8 relates to egr temperature sensor d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P04E9EGR Temperature Sensor D Circuit Intermittent/ErraticCheck soonEmissions System30–120 minutes for initial diagnosisP04E9 relates to egr temperature sensor d circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.