P0631: VIN Not Programmed or Incompatible — Transmission Control Module
What to do
Usually driveable, possibly with default shift behaviour. Needs programming rather than parts.
What this code means
The transmission module holds no vehicle identification number or one that does not match — the counterpart of P0630 for the gearbox. Follows module replacement, and the repair is programming.
Likely causes
Start here
- Module not coded to the vehicle · specialist
- Second hand module locked to another vehicle · specialist
Less common
- Incorrect module part number for the vehicle · specialist
Symptoms
Components involved
Information, not instruction
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Have anything you intend to act on checked by a trained person against the manufacturer's own procedure for your vehicle. Nothing here replaces that procedure.
Community experience
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