Here are some of the possible causes:
* Faulty ABS sensor: These sensors monitor wheel speed. A malfunctioning sensor can trigger the light. This is a common cause.
* Low brake fluid: Insufficient brake fluid can affect the ABS system's operation. Check your brake fluid level immediately.
* Faulty ABS control module: This is the "brain" of the ABS system. A malfunctioning module requires professional diagnosis and repair.
* Wiring problems: Damaged or corroded wiring in the ABS system can cause intermittent or constant light illumination.
* Faulty wheel speed sensor ring: This ring is part of the wheel hub and is read by the ABS sensor. Damage to the ring can affect the sensor readings.
* Faulty ABS pump/motor: This is less common, but a failing pump can also trigger the light.
What you should do:
1. Check your brake fluid level: This is the easiest and quickest check. Low brake fluid is a serious issue and should be addressed immediately. If it's low, you'll need to find and fix the leak.
2. Have it professionally diagnosed: The ABS system is complex. You'll need to take your Caravan to a mechanic or auto parts store that can read the ABS codes using an OBD-II scanner (it may be a different connector on a 1998 vehicle, so a mechanic familiar with older vehicles is recommended). The diagnostic codes will pinpoint the specific problem.
Driving with the ABS light on is not ideal, as you won't have the benefit of the anti-lock braking system in an emergency. While your regular brakes should still work, the ABS is designed to prevent wheel lockup and improve braking performance in slippery conditions. Get it checked out as soon as possible.
