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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 97–120 of 975
P01C1Fuel Rail Pressure Sensor Circuit High Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C2Fuel Rail Pressure Sensor Circuit Intermittent/Erratic Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C3Fuel Pressure Sensor A CircuitCheck soonFuel System30–120 minutes for initial diagnosisP01C4Fuel Pressure Sensor A Circuit Range/PerformanceCheck soonFuel System30–120 minutes for initial diagnosisP01C5Fuel Pressure Sensor A Circuit LowCheck soonFuel System30–120 minutes for initial diagnosisP01C6Fuel Pressure Sensor A Circuit HighCheck soonFuel System30–120 minutes for initial diagnosisP01C7Fuel Pressure Sensor A Circuit Intermittent/ErraticCheck soonFuel System30–120 minutes for initial diagnosisP01C8Fuel Rail/System Pressure - Too Low Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01C9Fuel Rail/System Pressure - Too High Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01CAFuel Rail Pressure Too Low - Engine Cranking Bank 2Check soonFuel System30–120 minutes for initial diagnosisP01CBCylinder 1 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01CCCylinder 1 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01CDCylinder 2 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01CECylinder 2 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01CFCylinder 3 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D0Cylinder 3 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D1Cylinder 4 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D2Cylinder 4 Injection Timing Performance - Over AdvancedCheck soonFuel System30–120 minutes for initial diagnosisP01D3Cylinder 5 Injection Timing Performance - Over RetardedCheck soonFuel System30–120 minutes for initial diagnosisP01D4Cylinder 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 diagnosis