Causes and Fixes U0140 Code: Lost Communication With Body Control Module (BCM)

How to fix a U0140 engine code: Lost Communication with Body Control Module (BCM) Symptoms of a Bad Body Control Module Video    • Symptoms of a Bad Body Control Module (BCM)   Read here for more information. https://www.backyardmechanic.org/symp... 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.