ABS and brake light on

Tiny
FARR2007
  • MEMBER
  • 2004 FORD FOCUS
  • 2.0L
  • 4 CYL
  • FWD
  • AUTOMATIC
  • 242,000 MILES
ABS light is on after new front pressed bearings installed, code for ABS is c1234. Also, I had a rear drum replaced because of bad bearing and that code is c1236. Brake light goes out when shut car off, but soon as you drive a block or less it will illuminate.
Tuesday, February 14th, 2017 AT 12:07 PM

21 Replies

Tiny
WRENCHTECH
  • MECHANIC
  • 20,761 POSTS
You have a problem with the right front and left rear speed sensors. Something in the sensor may have gotten damaged or the tone ring is out of position for some reason. The issue is definitely related to the work done.
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Tuesday, February 14th, 2017 AT 1:04 PM
Tiny
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Are you positive on this and how do you fix it? Also, would you know how to disconnect the ABS sensor from the harness to put new one in? But how would I fix the back also?
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Tuesday, February 14th, 2017 AT 1:45 PM
Tiny
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I am positive the speed sensors are no longer reading on those two wheels. Someone else has to determine the actual cause. Do not assume it is the sensor itself unless you actually, physically broke it.
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Tuesday, February 14th, 2017 AT 1:48 PM
Tiny
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But you think it is the sensors so why should I not assume that it is the sensors? Also, have you heard of a P1000 code?
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Tuesday, February 14th, 2017 AT 4:51 PM
Tiny
FARR2007
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So how can I fix this?
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Tuesday, February 14th, 2017 AT 4:52 PM
Tiny
WRENCHTECH
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When did I say I think it is sensors. You have an issue with the sensor circuit that may or may not be caused by the sensor itself.
It could be a problem with the tone ring or the wiring. It is highly unlikely two sensors failed at the same time unless you simply broke them.

The P1000 code simple means you recently cleared the codes.
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Tuesday, February 14th, 2017 AT 4:55 PM
Tiny
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Well the mechanic put in the bearings In front and and came on and after he put new drum and bearing in rear the brake light came on as soon as I start driving. Should I be concerned about these as in will it affect driving? What would I need to do to fix? How much you think it would cost? I do not even know where to get a tone ring? I am not sure if new rear drum had a new abs ring on it because I do not think he transferred the ring.
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Tuesday, February 14th, 2017 AT 5:22 PM
Tiny
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Well, if the new drum did not have a ring, you just solved one of your problems.

I do not even know why you are trying to deal with this. This problem belongs to the mechanic that did the job. He is the one that caused it.

The only issue with driving it is the ABS system has been disabled so you just have regular brakes.
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Tuesday, February 14th, 2017 AT 5:26 PM
Tiny
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And the rear brake light could be from the drum possibly if it do not have that ABS ring on it? They did not fail at same time one was done a few weeks later.
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Tuesday, February 14th, 2017 AT 5:38 PM
Tiny
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Please reply back with more information please.
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Wednesday, February 15th, 2017 AT 7:21 AM
Tiny
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There is no more information I can give you at this time. The system needs to be inspected to determine what was damaged or left off when the repairs were made.
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Wednesday, February 15th, 2017 AT 8:13 AM
Tiny
FARR2007
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Can you at least tell me where the rear sensors are because I know where the front are?
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Wednesday, February 15th, 2017 AT 10:53 AM
Tiny
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All you have to do is follow the wire into the back of the wheel.

https://www.2carpros.com/images/external/108690812.gif
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Wednesday, February 15th, 2017 AT 11:09 AM
Tiny
FARR2007
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Where is the tone ring located? I bought a new cv axel and on the box it shows the new tone ring but on the part I cannot see one, I am having trouble locating a axel with a tone ring or is it all a sealed unit? Is it internal?
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Tuesday, February 21st, 2017 AT 3:15 PM
Tiny
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I can't find any pictures on this one. It's either going to be on the C?V joint or part of the hub bearing. If you remove the sensor, just look inside the hole for the teeth.
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Tuesday, February 21st, 2017 AT 3:20 PM
Tiny
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Well with the new axel I bought I dont see any teeth and ford just said ypu can buy just the tone ring separate
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Tuesday, February 21st, 2017 AT 3:32 PM
Tiny
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Did ford change the design?
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Tuesday, February 21st, 2017 AT 6:43 PM
Tiny
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If the car is available with or without ABS then the axle would also be available with and without the tone ring if that is actually where it goes.
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Tuesday, February 21st, 2017 AT 6:45 PM
Tiny
FARR2007
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I am so confused as to this tone ring situation, I don't know what style my car has because I never had axel off I need to figure this out
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Wednesday, February 22nd, 2017 AT 3:39 PM
Tiny
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Ok so on top of having the c1234 NS C1236 codes, I now have c1145 and c1175
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Thursday, February 23rd, 2017 AT 11:03 AM

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