How to fix a U0140 engine code: Lost Communication with Body Control Module (BCM) Symptoms of a Bad Body Control Module Video
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The Body Control Module (BCM) monitors and controls electronics located in the body of the vehicle. This includes windows, mirrors, immobilizer system, central locking, lights, horn, wipers, and more.

Possible Causes of a U0140 Code:
Battery or Alternator issues
Blown Fuse
BCM Ground Wire
Damaged Wiring Harness
Damaged BCM Module (Check for Brunt Smell)

By using this information user assumes all risk of use.

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