OBD-II Diagnostic Trouble Codes

Find more information about your vehicle's OBD-II diagnostic trouble code

On-board diagnostics (OBD-II) and diagnostic trouble codes (DTC) are part of your car's self-diagnostic system. The five-character alphanumeric code identifies the part and problem.

• P0101: Mass Air Flow Circuit Range/Performance Problem
• P0102: Mass Air Flow (MAF) Sensor Circuit Low Input
• P0106: Manifold Absolute Pressure (MAP) Sensor Performance Problem
• P0113: Intake Air Temperature Sensor 1 Circuit High Input
• P0118: Engine Coolant Temperature Sensor Circuit High Input
• P0121: Throttle Position Sensor Performance Problem
• P0122: Throttle Position Sensor (TPS) Circuit Low Input
• P0123: Throttle Position Sensor Circuit High Input
• P0128: Coolant Temperature Below Thermostat Regulating Temperature
• P0131: Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 1)
• P0134: Oxygen Sensor Circuit No Activity Detected (Bank 1, Sensor 1)
• P0135: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 1)
• P0136: Oxygen Sensor Circuit Malfunction (Bank 1, Sensor 2)
• P0137: Oxygen Sensor Circuit Low Voltage (Bank 1, Sensor 2)
• P0138: Oxygen Sensor Circuit High Voltage (Bank 1, Sensor 2)
• P0141: Oxygen Sensor Heater Circuit Malfunction (Bank 1, Sensor 2)
• P0157: Oxygen Sensor Circuit Low Voltage (Bank 2, Sensor 2)
• P0161: Oxygen Sensor Heater Circuit Malfunction (Bank 2, Sensor 2)
• P0171: System Too Lean (Bank 1)
• P0172: System Too Rich (Bank 1)
• P0174: System Too Lean (Bank 2)
• P0175: System Too Rich (Bank 2)
• P0300: Random/Multiple Cylinder Misfire Detected
• P0301: Cylinder 1 Misfire Detected
• P0302: Cylinder 2 Misfire Detected
• P0303: Cylinder 3 Misfire Detected
• P0304: Cylinder 4 Misfire Detected
• P0305: Cylinder 5 Misfire Detected
• P0306: Cylinder 6 Misfire Detected
• P0325: Knock Sensor 1 Circuit Malfunction
• P0327: Knock Sensor 1 Circuit Low Input (Bank 1)
• P0332: Knock Sensor 2 Circuit Low Input (Bank 2)
• P0335: Crankshaft Position Sensor Circuit Malfunction
• P0340: Camshaft Position Sensor Circuit Malfunction
• P0341: Camshaft Position Sensor Circuit Range/Performance
• P0351: Ignition Coil "A" Primary/Secondary Circuit Malfunction
• P0401: Exhaust Gas Recirculation (EGR) Flow Insufficient Detected
• P0420: Catalyst System Efficiency Below Threshold (Bank 1)
• P0430: Catalyst System Efficiency Below Threshold (Bank 2)
• P0440: Evaporative Emission Control System Malfunction
• P0441: Evaporative Emission Control System Incorrect Purge Flow
• P0442: Evaporative Emission Control System Leak Detected (Small Leak)
• P0443: Evaporative Emission System Purge Control Valve Circuit Malfunction
• P0446: Evaporative Emission Control System Vent Control Circuit Malfunction
• P0449: Evaporative Emission Control System Vent Valve/Solenoid Circuit Malfunction
• P0451: Evaporative Emission System Pressure Sensor Range/Performance
• P0452: Evaporative Emission System Pressure Sensor Low Input
• P0455: Major Leak in Evaporative Emission System
• P0463: Fuel Level Sensor Circuit High Input
• P0500: Vehicle Speed Sensor (VSS) Malfunction
• P0507: Idle Control System RPM Higher Than Expected
• P0520: Engine Oil Pressure Sensor Circuit Malfunction
• P0521: Engine Oil Pressure Sensor/Switch Range/Performance
• P0562: System Voltage Low
• P0700: Transmission Control System Malfunction
• P0705: Transmission Range Sensor Circuit Malfunction
• P0720: Output Speed Sensor Circuit Malfunction
• P0741: Torque Converter Clutch Circuit Performance or Stuck Off