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U0101 - Lost Communication With Transaxle Control Module (TCM)

U0101 - LOST COMMUNICATION WITH TRANSAXLE CONTROL MODULE (TCM)

Description:  The powertrain control module (PCM) continuously monitors the controller area network (CAN) for messages from the TCM. This DTC sets when the PCM does not receive the TCM message within the defined amount of time.
Possible Causes: 
  • Damaged CAN communication bus circuit
Diagnostic Aids:  Network DTC concerns occur during module-to-module communication. Refer to the MODULE COMMUNICATIONS NETWORK -- E-SERIES to diagnose the transmission control module (TCM) does not respond to the scan tool symptom.
Application  Key On Engine Off  Key On Engine Running  Continuous Memory 
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