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 stays on and I now have also codes c1145 and c1175
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Thursday, February 23rd, 2017 AT 11:20 AM

6 Replies

Tiny
STEVE W.
  • EXPERT
C1234 is ABS Right Front wheel sensor signal missing.
C1145 is ABS Right Front wheel sensor signal input failure.

C1236 is ABS Left Rear wheel sensor signal missing.
C1175 is ABS Left Rear wheel sensor signal input failure.

Usually these codes mean that either the sensors are bad, the wires to them are bad or the connections are bad.
Additionally with this car it is also possible that the bearings were installed backwards. One side of the bearing has a magnetic ring that the speed sensor reads. If the bearing is installed with that ring to the outside the ABS sensor cannot read it and you get the same two codes.
Usually the two sides are easy to tell apart. The magnetic side is usually black and rotates with the outer race. The "outside" usually has a metal shield.
And just to make it more fun, both bearings are available without the ABS encoder ring on them.
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Thursday, February 23rd, 2017 AT 1:33 PM
Tiny
FARR2007
  • MEMBER
Well I got both bearings from oreilly auto parts and drivers side front is mot giving me a code but passenger is and like I said after u bought the rear drum with the bearing already inside drum I get a brake light also, so if wht your telling me is true then either the mechanic put passengers bearing on wrong or I was sold a wrong bearing
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Thursday, February 23rd, 2017 AT 3:02 PM
Tiny
STEVE W.
  • EXPERT
It's also possible that it's a combination of a bad sensor and a wrong bearing.
You basically have a passenger front circuit and drivers side rear that the ABS controller doesn't see so it turns on the ABS light to tell you that the ABS is turned off.

OK I found your original post. It appears you still have the same problem and have not taken it back to the mechanic yet. If you paid to have the work done the mechanic should be the one to fix it.
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Thursday, February 23rd, 2017 AT 4:29 PM
Tiny
FARR2007
  • MEMBER
He has a garage but I don't know if he is certified or just knows auto mechanics, I've tried to tell him to fix but he fought me on the bearing being backwards and he now said abs is not his specialty and he don't know how to fix what happens and now won't return my messages
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Thursday, February 23rd, 2017 AT 4:57 PM
Tiny
FARR2007
  • MEMBER
I'm Not sure what to do or how to fix
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Thursday, February 23rd, 2017 AT 7:34 PM
Tiny
STEVE W.
  • EXPERT
If he is getting paid to repair vehicles then take him to small claims court and get back the money you spent there. Depending on the state you may need to have the vehicle repaired somewhere else first, so check the laws in your state.

As to repairing it, That has been covered between your original post and this one. You need to determine if it's a bearing or sensor issue. Then repair or replace the offending parts. ABS is a basic system when it comes to the sensors.
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Thursday, February 23rd, 2017 AT 10:21 PM

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