DTC U0129: Lost Communication with Brake System Control Module [08/2019 - ]: Description

The ECM and skid control ECU send and receive signals via CAN communication.

If a communication error occurs between the ECM and skid control ECU, the ECM stores this DTC.

DTC No.	DTC Detection Condition	Trouble Area
U0129	All of the following conditions are met for 4.98 seconds or more (1 trip detection logic): Engine switch on (IG) Battery voltage is 10 V or higher No communication between ECM and skid control ECU	CAN communication system Skid control ECU ECM