The U0121 fault code indicates a communication problem with the Anti-Lock Brake System (ABS) Control Module. The ABS Control Module sends periodic messages to the Controller Area …

2020年6月29日 · Repair Information for U0121 GMC code. Learn what Lost Communication With Electronic Brake Control Module means, location and how to repair?

The U0121 GMC code indicates that there is a communication problem between the vehicle's engine control module (ECM) and the electronic brake control module (EBCM). This …

How to fix U0121 Code: Lost Communication with Anti-Lock Braking System (ABS) Module A U0121 means that the vehicle CAN Bus can’t communicate with the Anti-Lock Braking System …

The U0121 code stands for “Lost Communication With Anti-Lock Braking System (ABS) Module.” Some issues that could trigger the code include a dead battery, a faulty ABS control module, …

If you can access codes from the ABS module, then the U0121 code is either intermittent or a memory code. If unable to access codes for the ABS module, then the U0121 code that the …

2019年8月5日 · Monitor the voltage on the communication enable circuit 5986 at any of the modules affected, example EBCM, SDGM, PSCM, SWPS, SDM, HMI, PTO, and/or SCM. If …

2022年8月1日 · I have a mid-grade scanner that reads the Electronic Brake Control (ABS) and power steering modules showing no codes on the ABS module, but on the Power Steering …

2022年8月1日 · According to various sites, this U0121 code can be caused by a bad EBCM ground, a corroded connector by the gas tank or a problem with the CAN wiring. Before I start …

What does code U0121 mean? Code U0121 stands for Lost Communication with Anti-lock Brake System Module. Anti-lock brakes are required on all modern vehicles. The antilock braking …