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.

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Browse by symptom

Rough idle / shaking Stalling Hard starting Hesitation / power loss Flashing check engine light Poor fuel economy Shifting problems Temperature / cooling ABS / dashboard lights

Codes whose typical symptoms include hesitation / power loss - most serious first:

P0217Engine Coolant Over Temperature Condition P0016Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor A P0017Crankshaft Position - Camshaft Position Correlation Bank 1 Sensor B P0018Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor A P0019Crankshaft Position - Camshaft Position Correlation Bank 2 Sensor B P0087Fuel Rail/System Pressure - Too Low Bank 1 P0088Fuel Rail/System Pressure - Too High Bank 1 P0089Fuel Pressure Regulator A Performance P0121Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance P0122Throttle/Pedal Position Sensor/Switch A Circuit Low P0123Throttle/Pedal Position Sensor/Switch A Circuit High P0222Throttle/Pedal Position Sensor/Switch B Circuit Low P0223Throttle/Pedal Position Sensor/Switch B Circuit High P0234Turbocharger/Supercharger A Overboost Condition P0300Random/Multiple Cylinder Misfire Detected P0301Cylinder 1 Misfire Detected P0302Cylinder 2 Misfire Detected P0303Cylinder 3 Misfire Detected P0305Cylinder 5 Misfire Detected P0307Cylinder 7 Misfire Detected P0352Ignition Coil B Primary Control Circuit/Open P0354Ignition Coil D Primary Control Circuit/Open P0601Internal Control Module Memory Checksum Error P0605Internal Control Module Read Only Memory (ROM) Error P0606Control Module Processor P0607Control Module Performance P0716Input/Turbine Shaft Speed Sensor A Circuit Range/Performance P0717Input/Turbine Shaft Speed Sensor A Circuit No Signal P2002Particulate Filter Efficiency Below Threshold Bank 1 P2003Particulate Filter Efficiency Below Threshold Bank 2 P204FReductant System Performance Bank 1 P2101Throttle Actuator A Control Motor Circuit Range/Performance P2111Throttle Actuator A Control System - Stuck Open P2119Throttle Actuator A Control Throttle Body Range/Performance P2135Throttle/Pedal Position Sensor/Switch A/B Voltage Correlation P2138Throttle/Pedal Position Sensor/Switch D/E Voltage Correlation P2600Coolant Pump A Control Circuit/Open U0101Lost Communication With TCM U0131Lost Communication With Power Steering Control Module A U0420Invalid Data Received From Power Steering Control Module A