What are the common causes of ABS pump failure?
2 Answers
When the car dashboard displays "ABS," it indicates a fault in the ABS system. The reasons for the ABS light turning on are: 1. Wheel speed sensor failure; 2. ABS wiring fault; 3. ABS pump or pressure control solenoid valve failure; 4. ABS computer failure. The inspection methods for an illuminated ABS light include: 1. Verify if the parking brake is fully released; 2. Check if the brake fluid level is within the specified range; 3. Inspect the connection of the ABS electronic control unit wiring plugs and sockets; 4. Check the connection or contact of wiring connectors and wires; 5. Ensure all relays and fuses are intact and securely plugged in.
There are quite a few common causes for ABS pump failure. Having worked in the automotive industry for many years, I've found that electrical issues are frequent culprits—things like poor wiring connections or short circuits can interrupt signals and prevent the pump from activating. On the mechanical side, seal leaks or internal component wear can cause pressure loss, leading the pump to stop working. Driving habits play a big role too; frequent hard braking overloads the system, and prolonged overheating can warp components over time. Environmental factors also matter—areas with heavy rain or high salt exposure accelerate rust and corrosion, speeding up pump failure. Aging is inevitable; after several years of use, parts naturally wear out due to fatigue. These issues seriously compromise safety since a faulty ABS pump can cause wheels to lock up and skid during braking. Regular brake system checks, especially fluid replacement, are strongly recommended as preventive measures.
