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9,253 diagnostic guides
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh 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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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 1489–1512 of 2110
P2591Cruise Control Front Distance Range Sensor LeftLow prioritySensors & Electronics30–120 minutes for initial diagnosisP2592Cruise Control Front Distance Range Sensor RightLow prioritySensors & Electronics30–120 minutes for initial diagnosisP2593Turbocharger Speed Sensor B CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2594Turbocharger Speed Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2595Turbocharger Speed Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2596Turbocharger Speed Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2597Turbocharger Speed Sensor B Circuit IntermittentCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2598Turbocharger Boost Control Position Sensor A Performance - Stuck LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2599Turbocharger Boost Control Position Sensor A Performance - Stuck HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP259ATurbocharger Boost Control Position Sensor B Performance - Stuck LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP259BTurbocharger Boost Control Position Sensor B Performance - Stuck HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP259CExcessive Time To Enter Closed Loop Turbocharger A Boost ControlCheck soonSensors & Electronics30–120 minutes for initial diagnosisP259DExcessive Time To Enter Closed Loop Turbocharger B Boost ControlCheck soonSensors & Electronics30–120 minutes for initial diagnosisP259ETurbocharger A Boost Control Position At Low LimitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP259FTurbocharger A Boost Control Position At High LimitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25A0Turbocharger B Boost Control Position At Low LimitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25A1Turbocharger B Boost Control Position At High LimitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25A2Brake System Control Module A Requested MIL IlluminationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25A3Engine Hood OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25A9Piston Cooling Oil Control Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25AAPiston Cooling Oil Control Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25ABPiston Cooling Oil Control Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25ACPiston Cooling Oil Control Circuit Performance/Stuck OffCheck soonSensors & Electronics30–120 minutes for initial diagnosisP25ADPiston Cooling Oil Control Circuit Stuck OnCheck soonSensors & Electronics30–120 minutes for initial diagnosis