Q: ABS/Parking warning lights back on after supposed fix

asked by on

For several years the ABS/Parking warning light was on. Using the ‘short out the diagnostic wire’ I got error code 9, so I replaced the speed sensor and that solved that problem. Today has been a rainy day and the ABS/Parking warning light came on again. This time, though, it will not flash the error code. I found the diagnostic wire (black and white stripe) by going to the module and then immediately grounded it to a good ground just off the RWAL harness. But nothing happened; it did not help. I also tried to go straight from the wire and all fuses are in good condition, plus the light came on when I turned the key in the ignition. I am wondering why it will not flash the error code and thinking that perhaps the problem is a failed RWAL module. Also, a month ago I got a brake inspection and they reported that all 4 brakes have 40% wear, so those should be okay for a while. I will appreciate your help in your giving me a diagnosis for my van. Thanks.

To read the flash codes, make sure you have a clean and stable chassis ground or the codes will not flash. If there is a secure ground and no flash codes, then it is quite possible that this is an issue with the rear ABS module. You may want to enlist the help of a mechanic, such as one from YourMechanic, who can attempt to retrieve codes and therefore diagnose and repair the system. Please note that with a faulty ABS module, you will not have rear anti-lock brakes so the braking characteristics will be different.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. ABS/Parking warning lights back on after supposed fix

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Bleeding the brakes on a 98 dodge ram 2500 4wd 4 wheel abs. I read there are two valves that have to be bled off first?

You should first bleed the brakes normally and then hook up a DRB3 scanner and put ABS in bleed function to bleed out ABS system and then bleed system normally at each wheel again. Repeat as needed until all air...

Q: Should a heater tube on the water pump produce coolant flow instantly when disconnected on a 1995 Dodge B2500

Hello. If the coolant level is where it should be then you should get some flow from the heater tube. It will not be a lot of flow, but there should be some. If there is none then you may...

Q: The abs and slip and vdc off light comes on

Your car is equipped with wheel speed sensors at each of the four wheels which monitor wheel speed while relaying this information constantly to the ABS and traction control system which are controlled by the car's ECU. When the ECU...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Distributor O Ring Last?
The distributor is part of the ignition system in your vehicle and its purpose is to route high voltage from the ignition coil to the spark plug. The spark plug then...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the...