DTC U0129-87: Lost Communication With Brake System Control Module Missing Message [11/2022 - ]: Description
The TCM receives signals from the No. 2 skid control ECU via CAN communication. When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before performing troubleshooting for each corresponding ECU or sensor.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area | MIL | Memory | DTC Output from | Priority | Note |
|---|---|---|---|---|---|---|---|---|
| U0129-87 | Lost Communication With Brake System Control Module Missing Message | No communication between the TCM and No. 2 skid control ECU (brake actuator assembly) for 2.3 seconds or more (1-trip detection logic) |
|
Comes on | DTC stored | Transmission | A | SAE: U0129 |