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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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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 97–120 of 7353

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P0071Ambient Air Temperature Sensor Range/PerformanceLow prioritySensors & Electronics45–120 minutes for initial diagnosisP0071 means Ambient Air Temperature Sensor Range/Performance. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0075Intake Valve Control Solenoid Circuit Bank 1Check soonEngine Problems45–120 minutes for initial diagnosisP0075 means Intake Valve Control Solenoid Circuit Bank 1. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P0078Exhaust Valve Control Solenoid Circuit Bank 1Check soonEngine Problems45–120 minutes for initial diagnosisP0078 means Exhaust Valve Control Solenoid Circuit Bank 1. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P007ACharge Air Cooler Temperature Sensor Circuit Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007A relates to charge air cooler temperature sensor circuit bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007BCharge Air Cooler Temperature Sensor Circuit Range/Performance Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007B relates to charge air cooler temperature sensor circuit range/performance bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007CCharge Air Cooler Temperature Sensor Circuit Low Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007C relates to charge air cooler temperature sensor circuit low bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007DCharge Air Cooler Temperature Sensor Circuit High Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007D relates to charge air cooler temperature sensor circuit high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007ECharge Air Cooler Temperature Sensor Circuit Intermittent/Erratic Bank 1Check soonSensors & Electronics30–120 minutes for initial diagnosisP007E relates to charge air cooler temperature sensor circuit intermittent/erratic bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P007FCharge Air Cooler Temperature Sensor Bank1/Bank2 CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP007F relates to charge air cooler temperature sensor bank1/bank2 correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P0087Fuel Rail/System Pressure Too Low - Causes & FixesFuel SystemUnderstand P0087 fuel rail pressure too low code - common causes like a failing fuel pump or clogged filter, and how to fix it.P0088Fuel Rail/System Pressure - Too High Bank 1Check soonFuel System30–120 minutes for initial diagnosisP0088 relates to fuel rail/system pressure - too high bank 1. Check the fault conditions and vehicle-specific procedure before replacing parts.P008ALow Pressure Fuel System Pressure - Too LowCheck soonFuel System30–120 minutes for initial diagnosisP008A relates to low pressure fuel system pressure - too low. Check the fault conditions and vehicle-specific procedure before replacing parts.P008BLow Pressure Fuel System Pressure - Too HighCheck soonFuel System30–120 minutes for initial diagnosisP008B relates to low pressure fuel system pressure - too high. Check the fault conditions and vehicle-specific procedure before replacing parts.P008CFuel Cooler Pump Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP008C relates to fuel cooler pump control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P008DFuel Cooler Pump Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP008D relates to fuel cooler pump control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P008EFuel Cooler Pump Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP008E relates to fuel cooler pump control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P008FEngine Coolant Temperature/Fuel Temperature CorrelationCheck soonFuel System30–120 minutes for initial diagnosisP008F relates to engine coolant temperature/fuel temperature correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P0090Fuel Pressure Regulator 1 Control CircuitCheck soonFuel System45–120 minutes for initial diagnosisP0090 means Fuel Pressure Regulator 1 Control Circuit. Learn the likely symptoms, causes, safety implications, and a practical diagnostic order.P009AIntake Air Temperature/Ambient Air Temperature CorrelationLow prioritySensors & Electronics30–120 minutes for initial diagnosisP009A relates to intake air temperature/ambient air temperature correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P009BFuel Pressure Relief Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP009B relates to fuel pressure relief control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P009CFuel Pressure Relief Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP009C relates to fuel pressure relief control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P009DFuel Pressure Relief Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP009D relates to fuel pressure relief control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P009EFuel Pressure Relief Control Performance/Stuck OffCheck soonFuel System30–120 minutes for initial diagnosisP009E relates to fuel pressure relief control performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P009FFuel Pressure Relief Control Stuck OnCheck soonFuel System30–120 minutes for initial diagnosisP009F relates to fuel pressure relief control stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.