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9,253 diagnostic guides

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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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Severity

All severities9253 Low priority305 Check soon8256 Urgent621

Code family

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 1105–1128 of 9253

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P0238Turbocharger/Supercharger Boost Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0238 relates to turbocharger/supercharger boost sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0239Turbocharger/Supercharger Boost Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0239 relates to turbocharger/supercharger boost sensor b circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P023ACharge Air Cooler Coolant Pump A Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP023A relates to charge air cooler coolant pump a control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P023BCharge Air Cooler Coolant Pump A Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP023B relates to charge air cooler coolant pump a control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P023CCharge Air Cooler Coolant Pump A Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP023C relates to charge air cooler coolant pump a control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P023DManifold Absolute Pressure - Turbocharger/Supercharger Boost Sensor A CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP023D relates to manifold absolute pressure - turbocharger/supercharger boost sensor a correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P023EManifold Absolute Pressure - Turbocharger/Supercharger Boost Sensor B CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP023E relates to manifold absolute pressure - turbocharger/supercharger boost sensor b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P023FFuel Pump Secondary Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP023F relates to fuel pump secondary circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P0240Turbocharger/Supercharger Boost Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0240 relates to turbocharger/supercharger boost sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0241Turbocharger/Supercharger Boost Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0241 relates to turbocharger/supercharger boost sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0242Turbocharger/Supercharger Boost Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0242 relates to turbocharger/supercharger boost sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0243Turbocharger/Supercharger Wastegate Actuator ACheck soonSensors & Electronics30–120 minutes for initial diagnosisP0243 relates to turbocharger/supercharger wastegate actuator a. Check the fault conditions and vehicle-specific procedure before replacing parts.P0244Turbocharger/Supercharger Wastegate Actuator A Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0244 relates to turbocharger/supercharger wastegate actuator a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0245Turbocharger/Supercharger Wastegate Actuator A LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0245 relates to turbocharger/supercharger wastegate actuator a low. Check the fault conditions and vehicle-specific procedure before replacing parts.P0246Turbocharger/Supercharger Wastegate Actuator A HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0246 relates to turbocharger/supercharger wastegate actuator a high. Check the fault conditions and vehicle-specific procedure before replacing parts.P0247Turbocharger/Supercharger Wastegate Actuator BCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0247 relates to turbocharger/supercharger wastegate actuator b. Check the fault conditions and vehicle-specific procedure before replacing parts.P0248Turbocharger/Supercharger Wastegate Actuator B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0248 relates to turbocharger/supercharger wastegate actuator b range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P0249Turbocharger/Supercharger Wastegate Actuator B LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0249 relates to turbocharger/supercharger wastegate actuator b low. Check the fault conditions and vehicle-specific procedure before replacing parts.P024ACharge Air Cooler Bypass Control A Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP024A relates to charge air cooler bypass control a range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P024BCharge Air Cooler Bypass Control A StuckCheck soonSensors & Electronics30–120 minutes for initial diagnosisP024B relates to charge air cooler bypass control a stuck. Check the fault conditions and vehicle-specific procedure before replacing parts.P024CCharge Air Cooler Bypass Position Sensor A CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP024C relates to charge air cooler bypass position sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P024DCharge Air Cooler Bypass Position Sensor A Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP024D relates to charge air cooler bypass position sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P024ECharge Air Cooler Bypass Position Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP024E relates to charge air cooler bypass position sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P024FCharge Air Cooler Bypass Position Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP024F relates to charge air cooler bypass position sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.