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
Find codes by symptomChoose what you notice to search matching code guides.
Rough idle or shakingVibration while stoppedHard to startLong cranking or no-startEngine stallsCuts out at idle or on the roadHesitates or loses powerSlow response when acceleratingBattery light is onCharging system warningHarsh gear changesDelayed or rough shifting
A symptom can have several causes. Treat matching codes as clues and follow the diagnostic checks in each guide.
Quick browse
Choose a vehicle system
FiltersSeverity · family
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 649–672 of 866
P2809Pressure Control Solenoid G Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP280ATransmission Range Sensor A Circuit Not LearnedCheck soonTransmission Issues30–120 minutes for initial diagnosisP280BTransmission Range Sensor B Circuit Not LearnedCheck soonTransmission Issues30–120 minutes for initial diagnosisP2810Pressure Control Solenoid G ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP2811Pressure Control Solenoid G IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP2812Pressure Control Solenoid G Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP2813Pressure Control Solenoid G Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP2814Pressure Control Solenoid G Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP2815Pressure Control Solenoid G Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP2816Pressure Control Solenoid HCheck soonTransmission Issues30–120 minutes for initial diagnosisP2817Pressure Control Solenoid H Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP2818Pressure Control Solenoid H Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP2819Pressure Control Solenoid H ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP281APressure Control Solenoid H IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP281BPressure Control Solenoid H Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosisP281CPressure Control Solenoid H Control Circuit Range/PerformanceCheck soonTransmission Issues30–120 minutes for initial diagnosisP281DPressure Control Solenoid H Control Circuit LowCheck soonTransmission Issues30–120 minutes for initial diagnosisP281EPressure Control Solenoid H Control Circuit HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP281FPressure Control Solenoid JCheck soonTransmission Issues30–120 minutes for initial diagnosisP2820Pressure Control Solenoid J Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP2821Pressure Control Solenoid J Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP2822Pressure Control Solenoid J ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP2823Pressure Control Solenoid J IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP2824Pressure Control Solenoid J Control Circuit/OpenCheck soonTransmission Issues30–120 minutes for initial diagnosis