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 |
---|---|
P0703 |
Torque Converter/Brake Switch B Circuit Malfunction |
P0704 |
Clutch Switch Input Circuit Malfunction |
P0705 |
Transmission Range Sensor Circuit malfunction (PRNDL Input) |
P0706 |
Transmission Range Sensor Circuit Range/Performance |
P0707 |
Transmission Range Sensor Circuit Low Input |
P0708 |
Transmission Range Sensor Circuit High Input |
P0709 |
Transmission Range Sensor Circuit Intermittent |
P0710 |
Transmission Fluid Temperature Sensor Circuit Malfunction |
P0711 |
Transmission Fluid Temperature Sensor Circuit Range/Performance |
P0712 |
Transmission Fluid Temperature Sensor Circuit Low Input |
P0713 |
Transmission Fluid Temperature Sensor Circuit High Input |
P0714 |
Transmission Fluid Temperature Sensor Circuit Intermittent |
P0715 |
Input/Turbine Speed Sensor Circuit Malfunction |
P0716 |
Input/Turbine Speed Sensor Circuit Range/Performance |
P0717 |
Input/Turbine Speed Sensor Circuit No Signal |
P0718 |
Input/Turbine Speed Sensor Circuit Intermittent |
P0719 |
Torque Converter/Brake Switch B Circuit Low |
P0720 |
Output Speed Sensor Circuit Malfunction |
P0721 |
Output Speed Sensor Range/Performance |
P0722 |
Output Speed Sensor No Signal |
P0723 |
Output Speed Sensor Intermittent |
P0724 |
Torque Converter/Brake Switch B Circuit High |
P0725 |
Engine Speed input Circuit Malfunction |
P0726 |
Engine Speed Input Circuit Range/Performance |
P0727 |
Engine Speed Input Circuit No Signal |
P0728 |
Engine Speed Input Circuit Intermittent |
P0730 |
Incorrect Gear Ratio |
P0731 |
Gear 1 Incorrect ratio |
P0732 |
Gear 2 Incorrect ratio |
P0733 |
Gear 3 Incorrect ratio |