Does traction control and ABS lights lit usually indicate wheel sensor issue? - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 24 Old 08-29-2014, 10:59 AM Thread Starter
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Does traction control and ABS lights lit usually indicate wheel sensor issue?

About a week ago, the ABS and traction control lights lit up. I have a 2.5" lift but the steering wheel is straight.

Tried googling info and some of what I found pointed to a wheel sensor. I tried the ignition on/off 3 times to display codes and none are stored, it just goes from dashes to saying DONE. From what I read, the display should tell you a left/right side without pinpointing specific wheel?

Will a regular OBD scanner give me more info?

Thanks for any insight!
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post #2 of 24 Old 08-29-2014, 11:06 AM
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Yes. Usually wheel sensor related or weak battery. It could be a broken wire to the sensor or the plug disconnected. Or a bad sensor. Especially if you've done a lift recently and didn't unplug the wire retainers for the sensors during droop for the coil change.

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post #3 of 24 Old 08-29-2014, 01:15 PM Thread Starter
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Its been lifted almost a year without an issue. About time to rotate the tires anyway, so I guess I will have to take a look.

Still under warranty, but I always wonder if the dealership is going to give me a hassle about the lift. If its something I can take care of myself, I'd rather do that.

Thank you for the info!
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post #4 of 24 Old 08-29-2014, 02:50 PM
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No problem.

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post #5 of 24 Old 08-29-2014, 03:00 PM
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The light is flashing? Yeah usually a sensor. I've broken two, one replacing a U joint, the other because I flexed it a little too much after my lift, the wire pulled apart. It's easy to replace, and the sensor usually costs about 20 bucks. If it does turn out to be a front, I'm not sure of the year of your Jeep but ask for a sensor from 2011 or newer. The sensor wires are longer than 07-10.

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post #6 of 24 Old 08-29-2014, 03:07 PM
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Unit bearing in the front going out can also cause it. Super easy to replace.

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post #7 of 24 Old 08-29-2014, 04:26 PM Thread Starter
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Quote:
Originally Posted by 2Door View Post
The light is flashing? Yeah usually a sensor. I've broken two, one replacing a U joint, the other because I flexed it a little too much after my lift, the wire pulled apart. It's easy to replace, and the sensor usually costs about 20 bucks. If it does turn out to be a front, I'm not sure of the year of your Jeep but ask for a sensor from 2011 or newer. The sensor wires are longer than 07-10.
Its a 2013... Both the ABS and traction control light (skidding car) are solid.

I just pulled all the wheels to take a look, and everything appears to be intact. I think I remember the instructions on my Teraflex lift said to pop the plastic retainers on the rear wheel sensor lines from the frame, which I did when installing the lift. Feels like there is plenty of slack in them.

Also noticed the hill holder function is disabled, which I think is one of the other symptoms. Seems like I'm totally on the right track.

I guess my last question is if an OBD scan identifies the sensor position, or at least a side? I could buy a couple and shotgun it, but I'd rather get it the first time.

Thanks again for all the help.
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post #8 of 24 Old 08-29-2014, 05:09 PM
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Probably not. The OBD scanners that are readily available may not give you any direction as to which side is giving you the issues. The dealer's STARscan probably could, but no sense in going to them for that. I know with my swaybar (Rubicon) unplugged, I don't get any codes, but the light is on the dash.

Now, that sensor runs from the wheel to a plug in the backside of the coil tower, so make sure you inspect the lines all the way to there. Sometimes they will break but the wire casing will stay mostly intact. Whereas your issue seems to be steady, I'm guessing that there is an actual broken connection someplace. In the back, they run quite a distance. The rear passenger one actually runs over the gas tank I think, and I have heard of them breaking around that area. If you still can't find a broken wire, break out the multimeter and pull the sensors till you find the culprit.

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post #9 of 24 Old 08-30-2014, 06:04 AM Thread Starter
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The fronts look pretty easy to trace, was hoping it would have been something more obvious. From the looks of it, I'd have to pull the rotors to even tone the lines out with a voltmeter. I have a regular Sport, so I'm guessing this issue also defeats the brake lock feature in the front that sort of makes it a phoney limited slip?

Last edited by TOK; 08-30-2014 at 06:12 AM.
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post #10 of 24 Old 08-31-2014, 02:26 AM
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Superchips will tell you which sensor is acting up. See if you can borrow one.

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post #11 of 24 Old 08-31-2014, 05:03 AM Thread Starter
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Quote:
Originally Posted by BumpInTheRoad View Post
Superchips will tell you which sensor is acting up. See if you can borrow one.
Thanks for the heads-up! I will take a look at the Superchips. I was considering buying an Innova 3160. Anyone have experience with that one? I think it will also display ABS errors for Chrysler.

I have two other OBD2 vehicles that are out of warranty, so a decent scanner would be helpful to have around.
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post #12 of 24 Old 08-31-2014, 07:35 AM
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Quote:
Originally Posted by TOK View Post
Thanks for the heads-up! I will take a look at the Superchips. I was considering buying an Innova 3160. Anyone have experience with that one? I think it will also display ABS errors for Chrysler.

I have two other OBD2 vehicles that are out of warranty, so a decent scanner would be helpful to have around.
Make sure you check the Inova website for a vehicle coverage chart to make sure your Jeep is on the list of ABS coverage. It will unfortunately not show ABS codes for all vehicles (even for the brands it says it covers). I have the non-ABS/SRS version of that tool and it works well and is simple to use. Just make sure you look into the vehicle coverage so you don't get caught off guard if it doesn't cover your Jeep.

Edit: looks like it only goes through 2012. It is possible that it would work on a 2013 if nothing changed from the 2012, but I wouldn't count on it too hard.

http://innova.com/Content/Support/Do..._App_Chart.pdf

Last edited by BigTB; 08-31-2014 at 07:48 AM.
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post #13 of 24 Old 08-31-2014, 07:58 AM
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Quote:
Originally Posted by TOK View Post
Its been lifted almost a year without an issue. About time to rotate the tires anyway, so I guess I will have to take a look.

Still under warranty, but I always wonder if the dealership is going to give me a hassle about the lift. If its something I can take care of myself, I'd rather do that.

Thank you for the info!
Steering wheel is straight? That's all it takes. Straighten wheel and drive it will fix it if that is a problem.

Quote:
Originally Posted by leman View Post
Unit bearing in the front going out can also cause it. Super easy to replace.
Sensor is separate from unit bearing and tone rings are not usually damaged as these are enclosed.

Quote:
Originally Posted by BumpInTheRoad View Post
Superchips will tell you which sensor is acting up. See if you can borrow one.
Quote:
Originally Posted by TOK View Post
Thanks for the heads-up! I will take a look at the Superchips. I was considering buying an Innova 3160. Anyone have experience with that one? I think it will also display ABS errors for Chrysler.

I have two other OBD2 vehicles that are out of warranty, so a decent scanner would be helpful to have around.
On my 08' the trail dash tells me what side only. The obdII scanners available might tell you the same or give more info than this.

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post #14 of 24 Old 08-31-2014, 10:33 AM Thread Starter
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The wheel is straight, Jeep tracks straight. Out of curiosity about how far does it need to be off for this to happen? When I did the lift, I spun the adjuster maybe 3/4 of a turn. If the wheel is off, its only by a couple of degree's, not even enough to notice while driving it. It had also been OK for nearly a year.

The light was off when I shut the Jeep down one night, came on the next day when I started it.

Thanks BigTB for the link. My buddy has a '12 and the setup looks identical. Looks like all makes only go up to 2012 on that list, maybe thats just when that document was done.

Doing family stuff for Labor Day, won't even have a chance to look at this till next week.
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post #15 of 24 Old 08-31-2014, 04:32 PM
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Look at wheel sensors then. I was merely pointing out it can be an off center steering wheel. It's straight then I would look at the wire harness at each wheel to ensure its condition is good. Then look at replacing wheel sensors.

I damaged a rear wheel wheel sensor harness putting in the lift. Soldered it up quick. A year or more later and it was a source of my problems again. You lose the cruise control too.

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post #16 of 24 Old 09-01-2014, 05:48 PM
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I think that if the wheel was off-center it will only trigger the ESP/BAS. If the ABS light also goes on it's usually a wheel speed sensor.

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post #17 of 24 Old 09-01-2014, 05:57 PM
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Quote:
Originally Posted by BumpInTheRoad View Post
I think that if the wheel was off-center it will only trigger the ESP/BAS. If the ABS light also goes on it's usually a wheel speed sensor.

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post #18 of 24 Old 09-01-2014, 06:14 PM
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Just as a note here...my SCT 3875 told me which sensor was bad on mine last year. Told me right rear. Changed it and all was good.

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post #19 of 24 Old 09-01-2014, 07:03 PM Thread Starter
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Quote:
Originally Posted by j-rod17 View Post
Just as a note here...my SCT 3875 told me which sensor was bad on mine last year. Told me right rear. Changed it and all was good.
The confirmation that the Jeep software reports a position is good news. I read conflicting info, some said it didn't other said it would only report a side. Hoping any better CAN and ABS compliant scanner can pickup the position.

The Jeep is the newest vehicle I own by 9 years, sure I'm gonna need to read codes on the other klunkers any minute.

Thanks so much!
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post #20 of 24 Old 09-01-2014, 09:07 PM
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I had this exact issue on my 2012 last week... Autozone scanner said Left rear wheel speed sensor... Replaced left rear sensor, and all is well... I did have to drive a 100 yards or so when repaired for the lights to go off...
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post #21 of 24 Old 09-07-2014, 06:19 AM Thread Starter
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I went to Autozone and they said they could only scan engine codes, not ABS. I always seem to have shit luck when it comes to cheap/simple solutions!

I ended up ordering a Flashcal 3570. Even though I wanted an all-in-one scanner for my non-Jeeps, the info on the capability of the other ones I looked at was all over the map regarding CANBUS and ABS diagnosis.

It pushes my repair back a few days, but the driveability isn't really affected. I'll update this when I do my final repair. Just wanted to say thanks again for all the great tech help/info offered in this forum.
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post #22 of 24 Old 09-09-2014, 11:25 AM Thread Starter
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See post above about shit luck... My Superchips Flashcal just got here. The ABS and Traction Control lights are still on big as shit and it doesn't detect anything.
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post #23 of 24 Old 09-10-2014, 09:19 AM
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I have a Snap On modis scanner sitting here that'll tell exactly what's up, bar graphs too if needed. Comes in handy when a sensor decides to drop out at 5 mph

edit: Of course these run upwards of $9K

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post #24 of 24 Old 09-10-2014, 10:15 AM Thread Starter
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Quote:
Originally Posted by ockgator View Post
I have a Snap On modis scanner sitting here that'll tell exactly what's up, bar graphs too if needed. Comes in handy when a sensor decides to drop out at 5 mph

edit: Of course these run upwards of $9K
I probably should have just bought that, I'll probably end up spending that much anyway!

I didn't want to bug the dude that does my inspections, but maybe he'll let me throw it on their scanner if I pay him shop time. Thought I was going to be taking the Jeep on a 600 mile road trip, but that changed and I'm bringing my pickup. At least the pressure to get it fixed quickly is off.
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