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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

FiltersSeverity · family

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 1009–1032 of 9253

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P01BCEngine Oil Temperature Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01BC relates to engine oil temperature sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BDEngine Oil Temperature Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP01BD relates to engine oil temperature sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BEFuel Rail Pressure Sensor Circuit Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01BE relates to fuel rail pressure sensor circuit bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01BFFuel Rail Pressure Sensor Circuit Range/Performance Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01BF relates to fuel rail pressure sensor circuit range/performance bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C0Fuel Rail Pressure Sensor Circuit Low Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C0 relates to fuel rail pressure sensor circuit low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C1Fuel Rail Pressure Sensor Circuit High Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C1 relates to fuel rail pressure sensor circuit high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C2Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C2 relates to fuel rail pressure sensor circuit intermittent/erratic bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C3Fuel Pressure Sensor A CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01C3 relates to fuel pressure sensor a circuit. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C4Fuel Pressure Sensor A Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01C4 relates to fuel pressure sensor a circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C5Fuel Pressure Sensor A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01C5 relates to fuel pressure sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C6Fuel Pressure Sensor A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01C6 relates to fuel pressure sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C7Fuel Pressure Sensor A Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01C7 relates to fuel pressure sensor a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C8Fuel Rail/System Pressure - Too Low Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C8 relates to fuel rail/system pressure - too low bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01C9Fuel Rail/System Pressure - Too High Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C9 relates to fuel rail/system pressure - too high bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01CAFuel Rail Pressure Too Low - Engine Cranking Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01CA relates to fuel rail pressure too low - engine cranking bank 2. Check the fault conditions and vehicle-specific procedure before replacing parts.P01CBCylinder 1 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01CB relates to cylinder 1 injection timing performance - over retarded. Check the fault conditions and vehicle-specific procedure before replacing parts.P01CCCylinder 1 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01CC relates to cylinder 1 injection timing performance - over advanced. Check the fault conditions and vehicle-specific procedure before replacing parts.P01CDCylinder 2 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01CD relates to cylinder 2 injection timing performance - over retarded. Check the fault conditions and vehicle-specific procedure before replacing parts.P01CECylinder 2 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01CE relates to cylinder 2 injection timing performance - over advanced. Check the fault conditions and vehicle-specific procedure before replacing parts.P01CFCylinder 3 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01CF relates to cylinder 3 injection timing performance - over retarded. Check the fault conditions and vehicle-specific procedure before replacing parts.P01D0Cylinder 3 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D0 relates to cylinder 3 injection timing performance - over advanced. Check the fault conditions and vehicle-specific procedure before replacing parts.P01D1Cylinder 4 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D1 relates to cylinder 4 injection timing performance - over retarded. Check the fault conditions and vehicle-specific procedure before replacing parts.P01D2Cylinder 4 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D2 relates to cylinder 4 injection timing performance - over advanced. Check the fault conditions and vehicle-specific procedure before replacing parts.P01D3Cylinder 5 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D3 relates to cylinder 5 injection timing performance - over retarded. Check the fault conditions and vehicle-specific procedure before replacing parts.