Reference database
OBD-II Diagnostic Codes
Standardized OBD-II trouble codes with their generic SAE/ISO meaning.
29 entries
| Code | Meaning | System | Source |
|---|---|---|---|
| P0100 | Mass or Volume Air Flow Circuit Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0101 | Mass or Volume Air Flow Circuit Range/Performance Problem SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0110 | Intake Air Temperature Circuit Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0115 | Engine Coolant Temperature Circuit Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0120 | Throttle/Pedal Position Sensor/Switch A Circuit Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0128 | Coolant Thermostat (Coolant Temperature Below Thermostat Regulating Temperature) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0130 | O2 Sensor Circuit Malfunction (Bank 1, Sensor 1) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0171 | System Too Lean (Bank 1) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0172 | System Too Rich (Bank 1) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0174 | System Too Lean (Bank 2) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0300 | Random/Multiple Cylinder Misfire Detected SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0301 | Cylinder 1 Misfire Detected SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0302 | Cylinder 2 Misfire Detected SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0303 | Cylinder 3 Misfire Detected SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0304 | Cylinder 4 Misfire Detected SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0325 | Knock Sensor 1 Circuit Malfunction (Bank 1) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0335 | Crankshaft Position Sensor A Circuit Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0340 | Camshaft Position Sensor A Circuit Malfunction (Bank 1) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0401 | Exhaust Gas Recirculation Flow Insufficient Detected SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0420 | Catalyst System Efficiency Below Threshold (Bank 1) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0430 | Catalyst System Efficiency Below Threshold (Bank 2) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0440 | Evaporative Emission Control System Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0442 | Evaporative Emission Control System Leak Detected (small leak) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0455 | Evaporative Emission Control System Leak Detected (gross leak) SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0500 | Vehicle Speed Sensor Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0505 | Idle Air Control System Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| P0700 | Transmission Control System Malfunction SAE J2012 / ISO 15031 standardized generic code | Powertrain | Manually Curated |
| U0100 | Lost Communication With ECM/PCM "A" SAE J2012 / ISO 15031 standardized generic code | Network | Manually Curated |
| U0121 | Lost Communication With Anti-Lock Brake System (ABS) Control Module SAE J2012 / ISO 15031 standardized generic code | Network | Manually Curated |