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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 5905–5928 of 6682
P2C9CCold Start Turbocharger/Supercharger Wastegate Actuator B Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2C9DFuel Pressure Regulator C Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2C9EFuel Pressure Regulator C Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2C9FFuel Pressure Regulator D Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2CA0Fuel Pressure Regulator D Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2CA1Charge Air Cooler Coolant Pump Sense Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2CA2Charge Air Cooler Coolant Pump Sense Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2CA3Charge Air Cooler Coolant Pump Sense Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2CA4Particulate Filter Pressure Sensor Signals Swapped A/BCheck soonEmissions System30–120 minutes for initial diagnosisP2CA5DC/DC Converter Temperature Sensor E CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA6DC/DC Converter Temperature Sensor E Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA7DC/DC Converter Temperature Sensor E Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA8DC/DC Converter Temperature Sensor E Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CA9DC/DC Converter Temperature Sensor F CircuitCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CAADC/DC Converter Temperature Sensor F Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CABDC/DC Converter Temperature Sensor F Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CACDC/DC Converter Temperature Sensor F Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP2CADCharge Air Cooler Coolant Pump B Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP2CAECharge Air Cooler Coolant Pump B Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP2CAFCharge Air Cooler Coolant Pump B Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB0Charge Air Cooler Coolant Pump B PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB2Charge Air Cooler Coolant Pump B UnderspeedCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB3Charge Air Cooler Coolant Pump B Stuck/StalledCheck soonEngine Problems30–120 minutes for initial diagnosisP2CB4Charge Air Cooler Coolant Pump B Supply Voltage CircuitCheck soonElectrical & Charging System30–120 minutes for initial diagnosis