P0631 Code - VIN Not Programmed or Incompatible - TCM

What Does P0631 Mean?

The P0631 indicates that your vehicle's transmission control module has been unable to register its own identification number. Although this may be the result of faulty components, it's most often the cause of an improperly programmed command module.

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What are the common causes of P0631 ?

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

How do you troubleshoot P0631 ?

With the valve disconnected, the red voltmeter lead should be attached to the IMRC valve power wire and the black voltmeter lead connected to ground. You might continue by connecting the scanner to the vehicle diagnostic connector and retrieving all stored codes and freeze frame data. If the engine displays a miss and there wasn't a code, determine which cylinder is misfiring. If the exhaust manifold is visible, spay or pour a small amount of water on each cylinder exhaust port. Water will evaporate immediately on good cylinders and slowly on the missing cylinder. If this can't be accomplished pull the plugs and check the condition.

Searches related to P0631 Code - VIN Not Programmed or Incompatible - TCM

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