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Home >> Toyota >> 2024 >> Sequoia TRD Pro >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnostic Codes (11 Of 12) >> SFI System >> DTC U0129-87: Lost Communication with Brake System Control Module Missing Message [09/2022 - ] >> Monitor Description
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Monitor Description

The ECM and No. 2 skid control ECU (brake actuator assembly) send and receive signals via CAN communication.

If a communication error occurs between the ECM and No. 2 skid control ECU (brake actuator assembly), the ECM stores this DTC.

DTC No. Detection Item DTC Detection Condition Trouble Area MIL DTC Output from Priority Note
U0129-87 Lost Communication with Brake System Control Module Missing Message All of the following conditions are met for 2.3 seconds or more (1 trip detection logic):
  • Ignition switch ON
  • Auxiliary battery voltage is 10 V or higher
  • No communication between ECM and No. 2 skid control ECU (brake actuator assembly)
  • CAN communication system
  • No. 2 skid control ECU (brake actuator assembly)
  • ECM
Comes on Engine B
  • SAE: U0129
  • DTC for Mexico Models: Applies