OBD-II trouble codes
Ranked by how often the code appears in real NHTSA owner complaints - not alphabetically. P = powertrain, B = body, C = chassis, U = network.
Browse by symptom
P0300 · 429 mentionsRandom/Multiple Cylinder Misfire DetectedP0420 · 351 mentionsCatalyst System Efficiency Below Threshold Bank 1P0301 · 316 mentionsCylinder 1 Misfire DetectedP0700 · 256 mentionsTransmission Control System (MIL Request)P0463 · 242 mentionsFuel Level Sensor A Circuit HighP0720 · 159 mentionsOutput Shaft Speed Sensor CircuitP0171 · 152 mentionsSystem Too Lean Bank 1P0456 · 145 mentionsEVAP System Leak Detected (very small leak)P0016 · 141 mentionsCrankshaft Position - Camshaft Position Correlation Bank 1 Sensor AP0316 · 137 mentionsEngine Misfire Detected on Startup (First 1000 Revolutions)P0741 · 135 mentionsTorque Converter Clutch Circuit Performance/Stuck OffP0011 · 121 mentionsA Camshaft Position - Timing Over-Advanced or System Performance Bank 1P0740 · 119 mentionsTorque Converter Clutch Circuit/OpenP0128 · 118 mentionsCoolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature)P0430 · 115 mentionsCatalyst System Efficiency Below Threshold Bank 2P0335 · 98 mentionsCrankshaft Position Sensor A CircuitP0172 · 84 mentionsSystem Too Rich Bank 1P0101 · 83 mentionsMass or Volume Air Flow Sensor A Circuit Range/PerformanceU0100 · 81 mentionsLost Communication With ECM/PCM AP0730 · 79 mentionsIncorrect Gear RatioP0340 · 74 mentionsCamshaft Position Sensor A Circuit Bank 1 or Single SensorP0455 · 70 mentionsEVAP System Leak Detected - Large LeakU0101 · 65 mentionsLost Communication With TCMP0174 · 56 mentionsSystem Too Lean Bank 2P0442 · 49 mentionsEVAP System Leak Detected (small leak)P0705 · 44 mentionsTransmission Range Sensor A Circuit (PRNDL Input)P0012 · 43 mentionsA Camshaft Position - Timing Over-Retarded Bank 1P0401 · 42 mentionsEGR A Flow Insufficient DetectedP0441 · 38 mentionsEVAP System Incorrect Purge FlowU0121 · 36 mentionsLost Communication With Anti-Lock Brake System (ABS) Control Module AP0106 · 35 mentionsManifold Absolute Pressure/Barometric Pressure Sensor Circuit Range/PerformanceP0606 · 35 mentionsControl Module ProcessorU0140 · 33 mentionsLost Communication With Body Control ModuleP0500 · 32 mentionsVehicle Speed Sensor A CircuitP0607 · 30 mentionsControl Module PerformanceP0021 · 29 mentionsA Camshaft Position - Timing Over-Advanced or System Performance Bank 2P0496 · 29 mentionsEVAP System High Purge FlowP0446 · 26 mentionsEVAP System Vent Control CircuitP0121 · 25 mentionsThrottle/Pedal Position Sensor/Switch A Circuit Range/PerformanceP0507 · 25 mentionsIdle Control System RPM - Higher Than ExpectedP0725 · 23 mentionsEngine Speed Input CircuitP0102 · 21 mentionsMass or Volume Air Flow Sensor A Circuit LowP0715 · 21 mentionsInput/Turbine Shaft Speed Sensor A CircuitP0520 · 19 mentionsEngine Oil Pressure Sensor/Switch A CircuitP0341 · 18 mentionsCamshaft Position Sensor A Circuit Range/Performance Bank 1 or Single SensorP0601 · 18 mentionsInternal Control Module Memory Checksum ErrorP0022 · 17 mentionsA Camshaft Position - Timing Over-Retarded Bank 2P0122 · 17 mentionsThrottle/Pedal Position Sensor/Switch A Circuit LowP0562 · 17 mentionsSystem Voltage LowP0123 · 15 mentionsThrottle/Pedal Position Sensor/Switch A Circuit HighP0325 · 15 mentionsKnock/Combustion Vibration Sensor A CircuitP0345 · 15 mentionsCamshaft Position Sensor A Circuit Bank 2P0449 · 15 mentionsEVAP System Vent Valve Control Circuit/OpenP0505 · 15 mentionsIdle Control SystemP0506 · 15 mentionsIdle Control System RPM - Lower Than ExpectedP0351 · 14 mentionsIgnition Coil A Primary Control Circuit/OpenP0443 · 14 mentionsEVAP System Purge Control Valve A CircuitP0750 · 14 mentionsShift Solenoid AP0131 · 13 mentionsO2 Sensor Circuit Low Voltage Bank 1 Sensor 1P0457 · 13 mentionsEVAP System Leak Detected (fuel cap loose/off)P0452 · 12 mentionsEVAP System Pressure Sensor/Switch A Circuit LowP0138 · 11 mentionsO2 Sensor Circuit High Voltage Bank 1 Sensor 2P0141 · 11 mentionsO2 Sensor Heater Circuit Bank 1 Sensor 2P0113 · 10 mentionsIntake Air Temperature Sensor 1 Circuit High Bank 1P0685 · 10 mentionsECM/PCM Power Relay Control Circuit/OpenP0135 · 9 mentionsO2 Sensor Heater Circuit Bank 1 Sensor 1P0137 · 9 mentionsO2 Sensor Circuit Low Voltage Bank 1 Sensor 2P0605 · 9 mentionsInternal Control Module Read Only Memory (ROM) ErrorP0108 · 7 mentionsManifold Absolute Pressure/Barometric Pressure Sensor Circuit HighP0133 · 7 mentionsO2 Sensor Circuit Slow Response Bank 1 Sensor 1C0035 · 6 mentionsRight Front Wheel Speed Sensor SupplyP0107 · 6 mentionsManifold Absolute Pressure/Barometric Pressure Sensor Circuit LowP0742 · 6 mentionsTorque Converter Clutch Circuit Stuck OnP0161 · 5 mentionsO2 Sensor Heater Circuit Bank 2 Sensor 2P0320 · 5 mentionsIgnition/Distributor Engine Speed Input CircuitP0117 · 4 mentionsEngine Coolant Temperature Sensor 1 Circuit LowP0155 · 4 mentionsO2 Sensor Heater Circuit Bank 2 Sensor 1P0118 · 3 mentionsEngine Coolant Temperature Sensor 1 Circuit HighP0125 · 3 mentionsInsufficient Coolant Temperature for Closed Loop Fuel ControlP0332 · 3 mentionsKnock/Combustion Vibration Sensor B Circuit LowP0453 · 3 mentionsEVAP System Pressure Sensor/Switch A Circuit HighP0532 · 2 mentionsA/C Refrigerant Pressure Sensor A Circuit LowP0508 · 1 mentionsIdle Air Control System Circuit LowP0563 · 1 mentionsSystem Voltage HighP0602Control Module Programming ErrorP0703Brake Switch B Circuit