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.
User Menu
Contact Us
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) |
