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 1825–1848 of 8256
P075EShift Solenoid G IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP075FTransmission Fluid Level Too HighCheck soonTransmission Issues30–120 minutes for initial diagnosisP0765Shift Solenoid D MalfunctionCheck soonTransmission Issues45–120 minutes for initial diagnosisP076AShift Solenoid HCheck soonTransmission Issues30–120 minutes for initial diagnosisP076BShift Solenoid H Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP076CShift Solenoid H Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP076DShift Solenoid H ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP076EShift Solenoid H IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP076FGear 7 Incorrect RatioCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0770Shift Solenoid E MalfunctionCheck soonTransmission Issues45–120 minutes for initial diagnosisP0775Pressure Control Solenoid BCheck soonTransmission Issues30–120 minutes for initial diagnosisP0776Pressure Control Solenoid B Performance/Stuck OffCheck soonTransmission Issues30–120 minutes for initial diagnosisP0777Pressure Control Solenoid B Stuck OnCheck soonTransmission Issues30–120 minutes for initial diagnosisP0778Pressure Control Solenoid B ElectricalCheck soonTransmission Issues30–120 minutes for initial diagnosisP0779Pressure Control Solenoid B IntermittentCheck soonTransmission Issues30–120 minutes for initial diagnosisP077AOutput Shaft Speed Sensor Circuit - Loss of Direction SignalCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077BOutput Shaft Speed Sensor Circuit - Direction ErrorCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077COutput Shaft Speed Sensor Circuit LowCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077DOutput Shaft Speed Sensor Circuit HighCheck soonSensors & Electronics30–120 minutes for initial diagnosisP077ETransmission Fluid Temperature Measurement System - Multiple Sensor CorrelationCheck soonTransmission Issues30–120 minutes for initial diagnosisP077FReverse 2 Incorrect RatioCheck soonSensors & Electronics30–120 minutes for initial diagnosisP0780Shift ErrorCheck soonTransmission Issues30–120 minutes for initial diagnosisP07811-2 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosisP07822-3 ShiftCheck soonTransmission Issues30–120 minutes for initial diagnosis