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 | |
|---|---|---|
| P0768 |
Shift Solenoid D Electrical |
|
| P0769 |
Shift Solenoid D Intermittent |
|
| P0770 |
Shift Solenoid E Malfunction |
|
| P0771 |
Shift Solenoid E Performance or Stuck Off |
|
| P0772 |
Shift Solenoid E Stuck On |
|
| P0773 |
Shift Solenoid E Electrical |
|
| P0774 |
Shift Solenoid E Intermittent |
|
| P0780 |
Shift Malfunction |
|
| P0781 |
1-2 Shift Malfunction |
|
| P0782 |
2-3 Shift Malfunction |
|
| P0783 |
3-4 Shift Malfunction |
|
| P0784 |
4-5 Shift Malfunction |
|
| P0785 |
Shift/Timing Solenoid Malfunction |
|
| P0786 |
Shift/Timing Solenoid Range/Performance |
|
| P0787 |
Shift/Timing Solenoid Low |
|
| P0788 |
Shift/Timing Solenoid High |
|
| P0789 |
Shift/Timing Solenoid Intermittent |
|
| P0790 |
Normal/Performance Switch Circuit Malfunction |
|
| P0801 |
Reverse Inhibit Control Circuit Malfunction |
|
| P0803 |
1-4 Upshift (Skip Shift) Solenoid Control Circuit Malfunction |
|
| P0804 |
1-4 Upshift (Skip Shift) Lamp Control Circuit Malfunction |
