Should the engine mangement light come on, you can read most issues through the OBD port using a suitable code reader. More information can be found on the relevant pages for your particular smart: fortwo 450, fortwo 451 and Roadster. Should your code reader simply give you a fault code, please use this system to look up the description, possible cause and resolution where available.
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OBD Codes
| Name | Description | |
|---|---|---|
| P0453 |
Evaporative Emission Control System Pressure Sensor High Input |
|
| P0454 |
Evaporative Emission Control System Pressure Sensor Intermittent |
|
| P0455 |
Evaporative Emission Control System Leak Detected (gross leak) |
|
| P0460 |
Fuel Level Sensor Circuit Malfunction |
|
| P0461 |
Fuel Level Sensor Circuit Range/Performance |
|
| P0462 |
Fuel Level Sensor Circuit Low Input |
|
| P0463 |
Fuel Level Sensor Circuit High Input |
|
| P0464 |
Fuel Level Sensor Circuit Intermittent |
|
| P0465 |
Purge Flow Sensor Circuit Malfunction |
|
| P0466 |
Purge Flow Sensor Circuit Range/Performance |
|
| P0467 |
Purge Flow Sensor Circuit Low Input |
|
| P0468 |
Purge Flow Sensor Circuit High Input |
|
| P0469 |
Purge Flow Sensor Circuit Intermittent |
|
| P0470 |
Exhaust Pressure Sensor Malfunction |
|
| P0471 |
Exhaust Pressure Sensor Range/Performance |
|
| P0472 |
Exhaust Pressure Sensor Low |
|
| P0473 |
Exhaust Pressure Sensor High |
|
| P0474 |
Exhaust Pressure Sensor Intermittent |
|
| P0475 |
Exhaust Pressure Control Valve Malfunction |
|
| P0476 |
Exhaust Pressure Control Valve Range/Performance |
|
| P0477 |
Exhaust Pressure Control Valve Low |
|
| P0478 |
Exhaust Pressure Control Valve High |
|
| P0479 |
Exhaust Pressure Control Valve Intermittent |
|
| P0480 |
Cooling Fan 1 Control Circuit Malfunction |
|
| P0481 |
Cooling Fan 2 Control Circuit Malfunction |
|
| P0482 |
Cooling Fan 3 Control Circuit Malfunction |
|
| P0483 |
Cooling Fan Rationality Check Malfunction |
|
| P0484 |
Cooling Fan Circuit Over Current |
|
| P0485 |
Cooling Fan Power/Ground Circuit Malfunction |
|
| P0500 |
Vehicle Speed Sensor Malfunction |
