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Home >> Ford >> 1999 >> Escort ZX2, Automatic >> Repair and Diagnosis >> External Pages >> Different car >> Section 787 (Engine Controls - Diagnostic Subroutines -- Diesel 6.0L (99P E-Series & 99P F450/550)) >> Diagnostic Trouble Code (DTC) Charts and Descriptions >> U0101 - Lost Communication With Transmission Control Module (TCM)

U0101 - Lost Communication With Transmission Control Module (TCM)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2007 Ford RV Cutaway, 2007 Ford Pickup, 2007 Ford F550 Super Duty, 2007 Ford F450 Super Duty, and 2007 Ford Econoline. However, it is still accessible from the selected car via links, so may be relevant.
U0101 - LOST COMMUNICATION WITH TRANSMISSION 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: 
  • Internal communication error
Diagnostic Aids:  Network DTC concerns occur during module-to-module communication. For additional description and operation of the vehicle communication network, refer to appropriate MODULE COMMUNICATIONS NETWORK article.
Application    Key On Engine Off  Key On Engine Running  Continuous Memory 
All   Clear the DTCs. Repeat the self-test. If the DTC is retrieved again, install a new PCM.
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