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Sub Categories

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.

Please use this system to look up OEM smart part numbers. Each code was correct at the time of adding. However, we cannot be responsible for any parts that have become obselete or removed by smart. Should you spot any mistakes, please let us know via the contact us system.

If you are looking for a particular part number, please contact us with your VIN and as much detail as you can. We will look up the part number and get back to you. :)

  Name Description Part Number:
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