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DTC U0129: Lost Communication with Brake System Control Module: Description

The ECM receives signals sent from the skid control ECU via the CAN communication system. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

DTC No. DTC Detection Condition
  1. Diagnosis Condition
  2. Malfunction Status
  3. Malfunction Time
  4. Other
 Trouble Area
U0129
  1. Ignition switch ON
  2. No communication between the ECM and Skid Control ECU.
  3. 2.34 seconds
  4. 1-trip detection logic
  • CAN communication system
  • Brake actuator assembly (Skid control ECU)
  • ECM
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