How to Repair Fault Code u0121?

1 Answers
CarolineLee
07/30/25 4:34am
Fault code u0121 indicates a loss of communication with the anti-lock braking system (ABS) control module. Below are the solutions for fault code u0121: 1. Inspect the ABS sensor and check the wiring. 2. Perform repairs after identifying the specific cause. Here is additional information about the anti-lock braking system: 1. The function of the anti-lock braking system is to prevent wheel lock-up, making it a vehicle safety control system with advantages like anti-skid and anti-lock features. 2. The anti-lock braking system allows the car to steer while braking, ensuring directional stability during braking and preventing skidding or deviation. It is an improved technology based on conventional braking systems. 3. The anti-lock braking system can be divided into mechanical and electronic types, representing some of the most advanced and effective braking systems in modern vehicles.
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