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 913–936 of 1016
P2B96Injection Pulse PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2BB0Alternative Fuel Consumption Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2BB1Alternative Fuel Consumption Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2BB2Alternative Fuel Tank EmptyCheck soonFuel System30–120 minutes for initial diagnosisP2BB3Fuel Pump Secondary Circuit PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2BECFuel Control System A Too Lean Bank 1Check soonFuel System30–120 minutes for initial diagnosisP2BEDFuel Control System A Too Rich Bank 1Check soonFuel System30–120 minutes for initial diagnosisP2BEEFuel Control System A Too Lean Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BEFFuel Control System A Too Rich Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BF0Fuel Control System B Too Lean Bank 1Check soonFuel System30–120 minutes for initial diagnosisP2BF1Fuel Control System B Too Rich Bank 1Check soonFuel System30–120 minutes for initial diagnosisP2BF2Fuel Control System B Too Lean Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2BF3Fuel Control System B Too Rich Bank 2Check soonFuel System30–120 minutes for initial diagnosisP2C00Fuel Pressure Regulator C PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2C01Fuel Pressure Regulator D PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2C02Fuel Pressure Regulator D Control Circuit/OpenCheck soonFuel System30–120 minutes for initial diagnosisP2C03Fuel Pressure Regulator D Control Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2C04Fuel Pressure Regulator D Control Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP2C1ECold Start Fuel Pressure Regulator A PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP2C1FCold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too LowCheck soonFuel System30–120 minutes for initial diagnosisP2C20Cold Start Fuel Pressure Regulator A Exceeded Control Limits - Pressure Too HighCheck soonFuel System30–120 minutes for initial diagnosisP2C26Fuel Injector Group B Supply Sense CircuitCheck soonFuel System30–120 minutes for initial diagnosisP2C27Fuel Injector Group B Supply Sense Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP2C28Fuel Injector Group B Supply Sense Circuit HighCheck soonFuel System30–120 minutes for initial diagnosis