Error code
OBD2 P0631
OBD2P0631
Diagnostic Trouble Code· Standard OBD-II fault code read from the vehicle's onboard diagnostics.
What it means
VIN Not Programmed or Incompatible - TCM.
Severity
moderateCan drive, but may experience transmission issues.
Summary
P0631 indicates that the Vehicle Identification Number (VIN) is not programmed or incompatible in the Transmission Control Module (TCM).
Common Causes
- VIN not properly programmed into TCM
- Incompatible VIN data
Fixes
- Program the correct VIN into the TCM or replace the TCM if incompatible.
FAQ
What does P0631 mean?
P0631 means that the Vehicle Identification Number (VIN) is not programmed correctly in the Transmission Control Module (TCM).
Not affiliated with OBD2. Answer summarized from the manufacturer's manual linked above; consult that source for the authoritative procedure.
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