ABS light and traction control lights turn on intermittently

Tiny
STEVE L.
  • MEMBER
  • 2012 RAM 1500
  • 5.7L
  • V8
  • 2WD
  • AUTOMATIC
  • 101,500 MILES
Replaced the wheel speed sensor twice, replaced the wheel hub assembly twice, replaced the computer module and had the wiring repaired and the lights come on and off intermittently. I am at a loss. Help!
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Saturday, October 16th, 2021 AT 5:46 AM

7 Replies

Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Good morning,

What was the original code that was sent?

https://www.2carpros.com/articles/abs-warning-light-on-easy-repair-guide

Which wiring was repaired? The wires are so small for this system that repairing the wiring is extremely difficult.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

I attached a wiring diagram for you to view the system. I also attached a guide for the testing. What you need is a scan tool that can read the wheel speed of all the wheels to be sure that all the wheels are sending the correct signals.

https://www.2carpros.com/articles/how-to-check-wiring

https://www.2carpros.com/articles/how-to-use-a-voltmeter

Roy

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Saturday, October 16th, 2021 AT 7:23 AM
Tiny
STEVE L.
  • MEMBER
The original code said that there was an intermittent problem with right front sensor. Not sure of the actual code itself. This is what I was told. I had two repair shops and a Ram dealer work on it, and no one could repair it. Can I just replace the wiring?
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Saturday, October 16th, 2021 AT 7:41 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Can you have the code checked again at a parts store as that will give me a clue where the issue is located?

It is a free service to read the codes.

Roy
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Monday, October 18th, 2021 AT 1:02 PM
Tiny
STEVE L.
  • MEMBER
Here's the info I got from a scanner:
Dodge ABS
C101C (1/3) Stored
Right front wheel speed sensor signal erratic performance.
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Saturday, October 30th, 2021 AT 10:50 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
Thank you.

This indicates a wheel speed sensor issue. I attached the possibilities for you, but the most common problem is the sensor itself.

https://www.2carpros.com/articles/abs-wheel-speed-sensor-test

https://www.2carpros.com/articles/how-to-replace-an-abs-wheel-speed-sensor

Roy
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Monday, November 1st, 2021 AT 4:39 AM
Tiny
STEVE L.
  • MEMBER
I had the wheel speed sensor replaced twice. Would you agree that it may be wiring issue? If so, can the wiring be replaced? Thank you in advance for your continued support.
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Monday, November 1st, 2021 AT 5:00 AM
Tiny
ASEMASTER6371
  • CERTIFIED MECHANIC
It is possible. You need someone with a scan tool that can read the voltage from the sensor while the truck is moving. That will confirm if it is the wiring.

Yes, the harness can be replaced.

Roy
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Tuesday, November 2nd, 2021 AT 3:52 AM

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