Diagnostic library
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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.
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These are generic OBD2 definitions. Exact make, model, engine, and year compatibility will appear after vehicle-fitment data is added.
Diagnostic codes
Showing 1033–1056 of 9253
P01D4Cylinder 5 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D5Cylinder 6 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D6Cylinder 6 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D7Cylinder 7 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D8Cylinder 7 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D9Cylinder 8 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01DACylinder 8 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01DBCylinder 9 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01DCCylinder 9 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01DDCylinder 10 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01DECylinder 10 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01DFCylinder 11 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01E0Cylinder 11 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01E1Cylinder 12 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01E2Cylinder 12 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01E3Engine Coolant Temperature Sensor 3 CircuitCheck soonEngine Problems30–120 minutes for initial diagnosisP01E4Engine Coolant Temperature Sensor 3 Circuit Range/PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosisP01E5Engine Coolant Temperature Sensor 3 Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP01E6Engine Coolant Temperature Sensor 3 Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP01E7Engine Coolant Temperature Sensor 3 Circuit Intermittent/ErraticCheck soonEngine Problems30–120 minutes for initial diagnosisP01E8Engine Coolant Heater A Control Circuit/OpenCheck soonEngine Problems30–120 minutes for initial diagnosisP01E9Engine Coolant Heater A Control Circuit LowCheck soonEngine Problems30–120 minutes for initial diagnosisP01EAEngine Coolant Heater A Control Circuit HighCheck soonEngine Problems30–120 minutes for initial diagnosisP01EBEngine Coolant Heater A Control Circuit PerformanceCheck soonEngine Problems30–120 minutes for initial diagnosis