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 |
---|---|
P0100 |
Mass or Volume Air Flow Circuit Malfunction |
P0101 |
Mass or Volume Air Flow Circuit Range/Performance Problem |
P0102 |
Mass or Volume Air Flow Circuit Low Input |
P0103 |
Mass or Volume Air Flow Circuit High Input |
P0104 |
Mass or Volume Air Flow Circuit Intermittent |
P0105 |
Manifold Absolute Pressure/Barometric Pressure Circuit Malfunction |
P0106 |
Manifold Absolute Pressure/Barometric Pressure Circuit Range/Performance Problem |
P0107 |
Manifold Absolute Pressure/Barometric Pressure Circuit Low Input |
P0108 |
Manifold Absolute Pressure/Barometric Pressure Circuit High Input |
P0109 |
Manifold Absolute Pressure/Barometric Pressure Circuit Intermittent |
P0110 |
Intake Air Temperature Circuit Malfunction |
P0111 |
Intake Air Temperature Circuit Range/Performance Problem |
P0112 |
Intake Air Temperature Circuit Low Input |
P0113 |
Intake Air Temperature Circuit High Input |
P0114 |
Intake Air Temperature Circuit Intermittent |
P0115 |
Engine Coolant Temperature Circuit Malfunction |
P0116 |
Engine Coolant Temperature Circuit Range/Performance Problem |
P0117 |
Engine Coolant Temperature Circuit Low Input |
P0118 |
Engine Coolant Temperature Circuit High Input |
P0119 |
Engine Coolant Temperature Circuit Intermittent |
P0120 |
Throttle/Pedal Position Sensor/Switch A Circuit Malfunction |
P0121 |
Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem |
P0122 |
Throttle/Pedal Position Sensor/Switch A Circuit Low Input |
P0123 |
Throttle/Pedal Position Sensor/Switch A Circuit High Input |
P0124 |
Throttle/Pedal Position Sensor/Switch A Circuit Intermittent |
P0125 |
Insufficient Coolant Temperature for Closed Loop Fuel Control |
P0126 |
Insufficient Coolant Temperature for Stable Operation |
P0130 |
O2 Sensor Circuit Malfunction (Bank 1 Sensor 1) |
P0131 |
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 1) |
P0132 |
O2 Sensor Circuit High Voltage (Bank 1 Sensor 1) |