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 |
|---|---|
| P0329 |
Knock Sensor 1 Circuit Intermittent (Bank 1 or Single Sensor) |
| P0330 |
Knock Sensor 2 Circuit Malfunction (Bank 2) |
| P0331 |
Knock Sensor 2 Circuit Range/Performance (Bank 2) |
| P0332 |
Knock Sensor 2 Circuit Low Input (Bank 2) |
| P0333 |
Knock Sensor 2 Circuit High Input (Bank 2) |
| P0334 |
Knock Sensor 2 Circuit Intermittent (Bank 2) |
| P0335 |
Crankshaft Position Sensor A Circuit Malfunction |
| P0336 |
Crankshaft Position Sensor A Circuit Range/Performance |
| P0337 |
Crankshaft Position Sensor A Circuit Low Input |
| P0338 |
Crankshaft Position Sensor A Circuit High Input |
| P0339 |
Crankshaft Position Sensor A Circuit Intermittent |
| P0340 |
Camshaft Position Sensor Circuit Malfunction |
| P0341 |
Camshaft Position Sensor Circuit Range/Performance |
| P0342 |
Camshaft Position Sensor Circuit Low Input |
| P0343 |
Camshaft Position Sensor Circuit High Input |
| P0344 |
Camshaft Position Sensor Circuit Intermittent |
| P0350 |
Ignition Coil Primary/Secondary Circuit Malfunction |
| P0351 |
Ignition Coil A Primary/Secondary Circuit Malfunction |
| P0352 |
Ignition Coil B Primary/Secondary Circuit Malfunction |
| P0353 |
Ignition Coil C Primary/Secondary Circuit Malfunction |
| P0354 |
Ignition Coil D Primary/Secondary Circuit Malfunction |
| P0355 |
Ignition Coil E Primary/Secondary Circuit Malfunction |
| P0356 |
Ignition Coil F Primary/Secondary Circuit Malfunction |
| P0357 |
Ignition Coil G Primary/Secondary Circuit Malfunction |
| P0358 |
Ignition Coil H Primary/Secondary Circuit Malfunction |
| P0359 |
Ignition Coil I Primary/Secondary Circuit Malfunction |
| P0360 |
Ignition Coil J Primary/Secondary Circuit Malfunction |
| P0361 |
Ignition Coil K Primary/Secondary Circuit Malfunction |
| P0362 |
Ignition Coil L Primary/Secondary Circuit Malfunction |
| P0370 |
Timing Reference High Resolution Signal A Malfunction |
