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 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 1897–1920 of 8256

Most searched first

P07B3Transmission Park Position Sensor/Switch A Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B3 relates to transmission park position sensor/switch a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07B4Transmission Park Position Sensor/Switch A Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B4 relates to transmission park position sensor/switch a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07B5Transmission Park Position Sensor/Switch A Circuit Performance/LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B5 relates to transmission park position sensor/switch a circuit performance/low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07B6Transmission Park Position Sensor/Switch A Circuit Performance HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B6 relates to transmission park position sensor/switch a circuit performance high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07B7Transmission Park Position Sensor/Switch A Circuit Intermittent/ErraticCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B7 relates to transmission park position sensor/switch a circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P07B8Transmission Park Position Sensor/Switch B Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B8 relates to transmission park position sensor/switch b circuit/open. Check the fault conditions and vehicle-specific procedure before replacing parts.P07B9Transmission Park Position Sensor/Switch B Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP07B9 relates to transmission park position sensor/switch b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07BATransmission Park Position Sensor/Switch B Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP07BA relates to transmission park position sensor/switch b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07BBTransmission Park Position Sensor/Switch B Circuit Performance/LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP07BB relates to transmission park position sensor/switch b circuit performance/low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07BCTransmission Park Position Sensor/Switch B Circuit Performance HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP07BC relates to transmission park position sensor/switch b circuit performance high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07BDTransmission Park Position Sensor/Switch B Circuit Intermittent/ErraticCheck soonTransmission Issues30–120 minutes for initial diagnosisP07BD relates to transmission park position sensor/switch b circuit intermittent/erratic. Check the fault conditions and vehicle-specific procedure before replacing parts.P07BETransmission Park Position Sensor/Switch A/B CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP07BE relates to transmission park position sensor/switch a/b correlation. Check the fault conditions and vehicle-specific procedure before replacing parts.P07BFInput/Turbine Shaft Speed Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07BF relates to input/turbine shaft speed sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C0Input/Turbine Shaft Speed Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C0 relates to input/turbine shaft speed sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C1Input/Turbine Shaft Speed Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C1 relates to input/turbine shaft speed sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C2Input/Turbine Shaft Speed Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C2 relates to input/turbine shaft speed sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C3Input/Turbine Shaft Speed Sensor C Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C3 relates to input/turbine shaft speed sensor c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C4Input/Turbine Shaft Speed Sensor C Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C4 relates to input/turbine shaft speed sensor c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C5Intermediate Shaft Speed Sensor A Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C5 relates to intermediate shaft speed sensor a circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C6Intermediate Shaft Speed Sensor A Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C6 relates to intermediate shaft speed sensor a circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C7Intermediate Shaft Speed Sensor B Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C7 relates to intermediate shaft speed sensor b circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C8Intermediate Shaft Speed Sensor B Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C8 relates to intermediate shaft speed sensor b circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.P07C9Intermediate Shaft Speed Sensor C Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07C9 relates to intermediate shaft speed sensor c circuit low. Check the fault conditions and vehicle-specific procedure before replacing parts.P07CAIntermediate Shaft Speed Sensor C Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP07CA relates to intermediate shaft speed sensor c circuit high. Check the fault conditions and vehicle-specific procedure before replacing parts.