P0631 – VIN Not Programmed or Incompatible – TCM

P0631 Possible Symptoms

Engine Light ON (or Service Engine Soon Warning Light),Cruise control system inoperative

P0631 Possible Causes

VIN Not Programmed to Transmission Control Module (TCM),VIN Incompatible to Transmission Control Module (TCM)

P0631 Description

On some vehicle the Vehicle Identification Number (VIN) is stored in the Engine Control Module (ECM).