These databases allow "translation" of manufacturer specific DTC codes, not found in the OBD-II Standard.
| Manufacturer | Number of DTCs |
|---|---|
| Alfa Romeo | 29 |
| BMW | 4,781 |
| Chrysler | 665 |
| Fiat | 246 |
| Ford | 3,315 |
| GM | 5,325 |
| Honda | 367 |
| Mitsubishi | 3,998 |
| Nissan | 3,409 |
| Volkswagen | 9,137 |