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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 7249–7272 of 7353
P0146Oxygen Sensor Circuit No Activity Detected Bank 1 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0147Oxygen Sensor Heater Circuit Bank 1 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0151Oxygen Sensor Circuit Low Voltage Bank 2 Sensor 1Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0152Oxygen Sensor Circuit High Voltage Bank 2 Sensor 1Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0153Oxygen Sensor Circuit Slow Response Bank 2 Sensor 1Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0154Oxygen Sensor Circuit No Activity Detected Bank 2 Sensor 1Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0155Oxygen Sensor Heater Circuit Bank 2 Sensor 1Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0156Oxygen Sensor Circuit Bank 2 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0157Oxygen Sensor Circuit Low Voltage Bank 2 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0158Oxygen Sensor Circuit High Voltage Bank 2 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0160Oxygen Sensor Circuit No Activity Detected Bank 2 Sensor 2Check soonEmissions System45–120 minutes for initial diagnosisP0161Oxygen Sensor Heater Circuit Bank 2 Sensor 2Low prioritySensors & Electronics30–90 minutes for initial diagnosisP0162Oxygen Sensor Circuit Bank 2 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0163Oxygen Sensor Circuit Low Voltage Bank 2 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0164Oxygen Sensor Circuit High Voltage Bank 2 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0165Oxygen Sensor Circuit Slow Response Bank 2 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0166Oxygen Sensor Circuit No Activity Detected Bank 2 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0167Oxygen Sensor Heater Circuit Bank 2 Sensor 3Check soonEmissions System45–120 minutes for initial diagnosisP0191Fuel Rail Pressure Sensor A Circuit Range/PerformanceCheck soonFuel System45–120 minutes for initial diagnosisP0192Fuel Rail Pressure Sensor A Circuit LowCheck soonFuel System45–120 minutes for initial diagnosisP0193Fuel Rail Pressure Sensor A Circuit HighCheck soonFuel System45–120 minutes for initial diagnosisP0194Fuel Rail Pressure Sensor A Circuit IntermittentCheck soonFuel System45–120 minutes for initial diagnosisP0202Injector Circuit/Open Cylinder 2Check soonFuel System45–120 minutes for initial diagnosisP0203Injector Circuit/Open Cylinder 3Check soonFuel System45–120 minutes for initial diagnosis