Causes and Fixes U0121 Code: Lost Communication with Anti-Lock Braking System (ABS) Module
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YouTubeHVAC Mechanic
Causes and Fixes U0121 Code: Lost Communication with Anti-Lock Braking System (ABS) Module
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 (ABS) Module. The CAN (Controller Area Network) is a protocol that allows the ECM, PCM, TCM, and ABS modules to communicate with each other. Symptoms of a U0121 Code ...
289.6K viewsOct 9, 2023
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