How to Read ABS System Fault Codes?
2 Answers
Reading ABS system fault codes involves the following methods: 1. Connect the self-diagnosis activation circuit to read the fault codes; 2. Use a dedicated diagnostic tester connected to the fault diagnosis communication interface, following specific operational procedures to display the fault codes on the tester's screen; 3. Utilize the information display system on the vehicle's dashboard to read the fault codes. ABS, short for Anti-lock Braking System, functions to automatically control the braking force during vehicle braking, preventing the wheels from locking up and maintaining a state where the wheels are both rolling and sliding, with a slip ratio of around 20%, ensuring maximum traction between the wheels and the road surface.
When it comes to reading ABS trouble codes, let me share a simple method. When the ABS light comes on, it means the system has automatically stored a code due to an issue, just like the car computer's diary. Locate the OBD port in your car, usually found under the steering wheel or near the dashboard—it looks like a square socket. Just purchase an OBD scanner; affordable ones start at a few dozen yuan, and you can find plenty on e-commerce platforms. Connect it, turn the key to the ON position without starting the engine, and let the scanner automatically read the codes. The screen will display a combination of numbers or letters. Then, use a mobile app or an online manual to check the meaning, such as B1140 possibly indicating a faulty wheel speed sensor. You can first inspect if the sensor is dirty or the wiring is loose. If simple fixes don’t work, head to a repair shop. Never underestimate ABS issues—it prevents wheel lock-up and skidding during emergency braking, which is crucial for driving safety. Regular scanning for preventive maintenance is a good habit.
