U0140 Code: Meaning, Causes, and Symptoms | OBD2 Codes

U0140 – Lost Communication With Body Control Module


U0140 Possible Symptoms


Engine Light ON (or Service Engine Soon Warning Light)


U0140 Possible Causes


Communication error,Faulty Body Control Module (BCM),Body Control Module (BCM) harness is open or shorted,Body Control Module (BCM) circuit poor electrical connection


U0140 Description


The Powertrain Control Module (PCM) continuously monitors Controller Area Network (CAN) for messages from Body Control Module (BCM). The U0140 code sets when the PCM does not receive the BCM message within the defined amount of time.