P0631
VIN Not Programmed or Incompatible TCM
VIN Not Programmed or Incompatible TCM: the control module has detected this fault condition.
VIN Not Programmed or Incompatible TCM: the control module has detected this fault condition.
Common causes
- high
VIN field empty or mismatched
One of the most commonly reported causes for this code — check this first.
Typical part cost: $70-280
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First things to check
- 1Confirm the code with a scan tool and check for additional related codes.
- 2Inspect the relevant sensors, wiring, and connectors for damage or corrosion.
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Related codes
See related trouble codes
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Frequently asked questions
What does P0631 mean?
P0631 means "VIN Not Programmed or Incompatible TCM". It is a generic OBD-II code that points to a fault in the computer & auxiliary output controls.
What are the most common causes of P0631?
vin field empty or mismatched — these are the most commonly reported causes. Verify with a proper diagnosis before replacing parts, or use the Wrenchify app for a vehicle-specific diagnosis.
Can I keep driving with this code?
The vehicle is usually drivable for short distances, but the problem can worsen or affect emissions. Diagnose and repair as soon as practical. Use the Wrenchify app for a full diagnosis specific to your vehicle.
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