* Faulty ABS Sensor: The ABS sensors monitor the speed of each wheel and send this information to the ABS control module (ABS-CM). If any of these sensors are faulty or damaged, the ABS light may stay on continuously.
* Faulty Wheel Speed Sensor Wiring: The ABS sensors are connected to the ABS-CM via electrical wiring. If there is a problem with this wiring, such as a short circuit or open circuit, the ABS light may stay on.
* Faulty ABS Control Module (ABS-CM): The ABS-CM is responsible for interpreting the signals from the ABS sensors and controlling the ABS system. If the ABS-CM is faulty, the ABS light may stay on continuously.
* Low Brake Fluid Level: Low brake fluid level can cause the ABS light to stay on. This is because the brake fluid is also used to actuate the ABS system.
* Other Faults: In some cases, other faults within the vehicle, such as a problem with the transmission, can also cause the ABS light to stay on.
Diagnostic Process:
To accurately identify the cause of the ABS light staying on, a diagnostic scan tool is usually required. This tool can access the ABS-CM and retrieve stored fault codes that can help pinpoint the issue. Once the diagnostic scan is performed, the necessary repairs can be carried out to resolve the problem and turn off the ABS light.
