U0121

The U0121 code on a 2012-2017 Toyota Camry indicates a communication issue between the Engine Control Module (ECM) and the Anti-lock Brake System (ABS) module.

The U0121 code indicates a lost communication with the Anti-lock Brake System (ABS) control module in a 2007-2011 Toyota Camry XV40. This can lead to issues with the ABS functionality and trigger warning lights on the dashboard.

A U0121 communication error indicates a loss of communication with the Vehicle Dynamics Control Module (VDM) in a Toyota Camry XV70 (2018-2024), potentially affecting various vehicle systems.

The U0121 code indicates a loss of communication with the Anti-lock Braking System (ABS) control module in your 2007-2011 Toyota Camry XV40.