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.

Transmission Issues 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 73–96 of 833

Most searched first

P0796Pressure Control Solenoid C Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP0796 relates to pressure control solenoid c performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P0797Pressure Control Solenoid C Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP0797 relates to pressure control solenoid c stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P0798Pressure Control Solenoid C ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP0798 relates to pressure control solenoid c electrical. Check the fault conditions and vehicle-specific procedure before replacing parts.P0799Pressure Control Solenoid C IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP0799 relates to pressure control solenoid c intermittent. Check the fault conditions and vehicle-specific procedure before replacing parts.P079ATransmission Friction Element A Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP079A relates to transmission friction element a slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P079BTransmission Friction Element B Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP079B relates to transmission friction element b slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P079CTransmission Friction Element C Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP079C relates to transmission friction element c slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P079DTransmission Friction Element D Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP079D relates to transmission friction element d slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P079ETransmission Friction Element E Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP079E relates to transmission friction element e slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P079FTransmission Friction Element F Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP079F relates to transmission friction element f slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A0Transmission Friction Element G Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A0 relates to transmission friction element g slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A1Transmission Friction Element H Slip DetectedCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A1 relates to transmission friction element h slip detected. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A2Transmission Friction Element A Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A2 relates to transmission friction element a performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A3Transmission Friction Element A Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A3 relates to transmission friction element a stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A4Transmission Friction Element B Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A4 relates to transmission friction element b performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A5Transmission Friction Element B Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A5 relates to transmission friction element b stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A6Transmission Friction Element C Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A6 relates to transmission friction element c performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A7Transmission Friction Element C Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A7 relates to transmission friction element c stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A8Transmission Friction Element D Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A8 relates to transmission friction element d performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P07A9Transmission Friction Element D Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP07A9 relates to transmission friction element d stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P07AATransmission Friction Element E Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP07AA relates to transmission friction element e performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P07ABTransmission Friction Element E Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP07AB relates to transmission friction element e stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.P07ACTransmission Friction Element F Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP07AC relates to transmission friction element f performance/stuck off. Check the fault conditions and vehicle-specific procedure before replacing parts.P07ADTransmission Friction Element F Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP07AD relates to transmission friction element f stuck on. Check the fault conditions and vehicle-specific procedure before replacing parts.