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 | |
|---|---|---|
| P0133 |
O2 Sensor Circuit Slow Response (Bank 1 Sensor 1) |
|
| P0134 |
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 1) |
|
| P0135 |
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 1) |
|
| P0136 |
O2 Sensor Circuit Malfunction (Bank 1 Sensor 2) |
|
| P0137 |
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 2) |
|
| P0138 |
O2 Sensor Circuit High Voltage (Bank 1 Sensor 2) |
|
| P0139 |
O2 Sensor Circuit Slow Response (Bank 1 Sensor 2) |
|
| P0140 |
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 2) |
|
| P0141 |
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 2) |
|
| P0142 |
O2 Sensor Circuit Malfunction (Bank 1 Sensor 3) |
|
| P0143 |
O2 Sensor Circuit Low Voltage (Bank 1 Sensor 3) |
|
| P0144 |
O2 Sensor Circuit High Voltage (Bank 1 Sensor 3) |
|
| P0145 |
O2 Sensor Circuit Slow Response (Bank 1 Sensor 3) |
|
| P0146 |
O2 Sensor Circuit No Activity Detected (Bank 1 Sensor 3) |
|
| P0147 |
O2 Sensor Heater Circuit Malfunction (Bank 1 Sensor 3) |
|
| P0150 |
O2 Sensor Circuit Malfunction (Bank 2 Sensor 1) |
|
| P0151 |
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 1) |
|
| P0152 |
O2 Sensor Circuit High Voltage (Bank 2 Sensor 1) |
|
| P0153 |
O2 Sensor Circuit Slow Response (Bank 2 Sensor 1) |
|
| P0154 |
O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 1) |
|
| P0155 |
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 1) |
|
| P0156 |
O2 Sensor Circuit Malfunction (Bank 2 Sensor 2) |
|
| P0157 |
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 2) |
|
| P0158 |
O2 Sensor Circuit High Voltage (Bank 2 Sensor 2) |
|
| P0159 |
O2 Sensor Circuit Slow Response (Bank 2 Sensor 2) |
|
| P0160 |
O2 Sensor Circuit No Activity Detected (Bank 2 Sensor 2) |
|
| P0161 |
O2 Sensor Heater Circuit Malfunction (Bank 2 Sensor 2) |
|
| P0162 |
O2 Sensor Circuit Malfunction (Bank 2 Sensor 3) |
|
| P0163 |
O2 Sensor Circuit Low Voltage (Bank 2 Sensor 3) |
|
| P0164 |
O2 Sensor Circuit High Voltage (Bank 2 Sensor 3) |
