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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 4417–4440 of 7353

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P237CExhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP237C relates to exhaust heat exchanger exhaust bypass valve a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P237DExhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP237D relates to exhaust heat exchanger exhaust bypass valve a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P237EExhaust Heat Exchanger Exhaust Bypass Valve A Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP237E relates to exhaust heat exchanger exhaust bypass valve a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P237FExhaust Heat Exchanger Exhaust Bypass Valve A Control PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP237F relates to exhaust heat exchanger exhaust bypass valve a control performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2380EGR Sensor D CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP2380 relates to egr sensor d circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2381EGR Sensor D Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2381 relates to egr sensor d circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2382EGR Sensor D Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2382 relates to egr sensor d circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2383EGR Sensor D Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2383 relates to egr sensor d circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2384EGR Sensor D Circuit IntermittentCheck soonEmissions System30–120 minutes for initial diagnosisP2384 relates to egr sensor d circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P2385EGR Sensor E CircuitCheck soonEmissions System30–120 minutes for initial diagnosisP2385 relates to egr sensor e circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P2386EGR Sensor E Circuit HighCheck soonEmissions System30–120 minutes for initial diagnosisP2386 relates to egr sensor e circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P2387EGR Sensor E Circuit LowCheck soonEmissions System30–120 minutes for initial diagnosisP2387 relates to egr sensor e circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2388EGR Sensor E Circuit Range/PerformanceCheck soonEmissions System30–120 minutes for initial diagnosisP2388 relates to egr sensor e circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2389EGR Sensor E Circuit IntermittentCheck soonEmissions System30–120 minutes for initial diagnosisP2389 relates to egr sensor e circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P238AWater in Fuel Sensor B CircuitCheck soonFuel System30–120 minutes for initial diagnosisP238A relates to water in fuel sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P238BWater in Fuel Sensor B Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP238B relates to water in fuel sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P238CWater in Fuel Sensor B Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP238C relates to water in fuel sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P238DWater in Fuel Sensor B Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP238D relates to water in fuel sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P238EWater in Fuel Sensor B Circuit IntermittentCheck soonFuel System30–120 minutes for initial diagnosisP238E relates to water in fuel sensor b circuit intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P238FWater in Fuel Condition - Sensor BCheck soonFuel System30–120 minutes for initial diagnosisP238F relates to water in fuel condition - sensor b. Check the fault conditions and vehicle-specific procedure before replacing parts.P2390Diesel Intake Air Flow B Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2390 relates to diesel intake air flow b control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P2391Diesel Intake Air Flow B Control PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2391 relates to diesel intake air flow b control performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P2392Diesel Intake Air Flow B Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2392 relates to diesel intake air flow b control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P2393Diesel Intake Air Flow B Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2393 relates to diesel intake air flow b control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.