Diagnostic library

Find an OBD2 code

Search the code from your scanner, then narrow the library by system, severity, or code family.

9,253 diagnostic guides

Sort

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.

Check soon P · Powertrain Clear all

Quick browse

Choose a vehicle system

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

Vehicle coverage

These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.

Diagnostic codes

Showing 1801–1824 of 6682

Most searched first

P08ACClutch Pedal Position Sensor A Not LearnedCheck soonTransmission Issues30–120 minutes for initial diagnosisP08AC relates to clutch pedal position sensor a not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P08ADNeutral Position Sensor B Circuit/OpenCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08AD relates to neutral position sensor b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P08AENeutral Position Sensor B Circuit Range/PerformanceCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08AE relates to neutral position sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P08AFNeutral Position Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08AF relates to neutral position sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B0Neutral Position Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08B0 relates to neutral position sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B1Neutral Position Sensor B Circuit Intermittent/ErraticCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08B1 relates to neutral position sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B2Neutral Position Sensor A/B CorrelationCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08B2 relates to neutral position sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B3Neutral Position Sensor B Not LearnedCheck soonSensors & Electronics30–120 minutes for initial diagnosisP08B3 relates to neutral position sensor b not learned. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B4Clutch Pedal Position Sensor B Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP08B4 relates to clutch pedal position sensor b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B5Clutch Pedal Position Sensor B Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP08B5 relates to clutch pedal position sensor b circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B6Clutch Pedal Position Sensor B Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP08B6 relates to clutch pedal position sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B7Clutch Pedal Position Sensor B Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP08B7 relates to clutch pedal position sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B8Clutch Pedal Position Sensor B Circuit Intermittent/ErraticCheck soonTransmission Issues30–120 minutes for initial diagnosisP08B8 relates to clutch pedal position sensor b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P08B9Clutch Pedal Position Sensor A/B CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP08B9 relates to clutch pedal position sensor a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P08BAPressure Control Solenoid LCheck soonTransmission Issues30–120 minutes for initial diagnosisP08BA relates to pressure control solenoid l. Check the fault conditions and vehicle-specific procedure before replacing parts.P08BBPressure Control Solenoid L Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP08BB relates to pressure control solenoid l performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P08BCPressure Control Solenoid L Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP08BC relates to pressure control solenoid l stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P08BDPressure Control Solenoid L ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP08BD relates to pressure control solenoid l electrical. Check the fault conditions and vehicle-specific procedure before replacing parts.P08BEPressure Control Solenoid L IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP08BE relates to pressure control solenoid l intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P08BFPressure Control Solenoid L Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP08BF relates to pressure control solenoid l control circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P08C0Pressure Control Solenoid L Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP08C0 relates to pressure control solenoid l control circuit range/performance. Check the fault conditions and vehicle-specific procedure before replacing parts.P08C1Pressure Control Solenoid L Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP08C1 relates to pressure control solenoid l control circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P08C2Pressure Control Solenoid L Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP08C2 relates to pressure control solenoid l control circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P08C3Pressure Control Solenoid MCheck soonTransmission Issues30–120 minutes for initial diagnosisP08C3 relates to pressure control solenoid m. Check the fault conditions and vehicle-specific procedure before replacing parts.