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Discussion Starter #1 (Edited)
U1418 dtc

Pulled a 'service 4wd system' error this evening while going down the freeway. When I did they key on/off/on/off/on it gave me a U1418 code. What does this code mean? There were no other codes listed.:sick:

Took The jeep for it's first wash tonight, and the light came on about 15 min later. Still runs/drives and 4low works as well.
 

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U = 1418 Implausible Right Wheel Distance Signal
 

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Discussion Starter #3
English translation=? the right rear tire is registering a different speed than the others?
 

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Found this on another forum:

U1418 implausible right wheel distance signal.
Speed sensor went out on me again. Pulled the code and got a U1418. Thing is, I have over 36k and I do pay for the extended lifetime warranty, BUT, and the dealer wants a $100 deductible for it.

So, I can purchase 4 speed sensors for $50 shipped and do it myself, BUT, how do I know which speed sensor it is. It only says right, but, front or rear?

How do I tell which one it is?


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Scratch that, finally went under the JK and found the speed sensor wire loom had a nice gouge and kink on it. Pulled the wires from the loom, low and behold, a cut wire. Guess it flexed enough to sandwich the wire under the bumpstop and pad.

If you have this code come up, check your wiring and connections before purchasing anything. Thank goodness I didn't put the order in.





 

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Discussion Starter #5
Sweet, I'll check on it this week while I fix the cv and control arm.
 

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Discussion Starter #6
So when I got back in to go home tonight several hours later, all the lights were on when I started the truck, but by the time I backed out of the driveway (15 yds) they had all gone off. I'm thinking the carwash got some water somewhere it caused an issue. I'm still going to check it when I'm under fixing other items though--don't want to cross a stream or drive in heavy rain or a snowstorm and have it come on again.
 

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Discussion Starter #7
This once again reared it's ugly head during our snowstorm this week--anyone know specifically if it is front or rear? My front brakes lock and slide on the snow when I start driving a couple times then it flashes the service 4wd system and disables the abs, traction control etc.

I'm going to pick up the front and rear right side wheel speed sensors, but wanted to only replace the one that's gone bad rather than both, any help would be great.
 

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Discussion Starter #9
So it was the rear sensor. How do I know this? I bought both and changed out the front one first (since it was more exposed to the elements) and nothing happened. I then got the rear one out and fought for a minute with the connector--however it showed signs of scraping on the bottom side. Once I put the new one in the lights went away as soon as I started forward motion.
 

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Had the U1418 code pop up last night ESP, Traction Control,
ans ABS lights were lit up like Christmas. I called Jeep and
my service advisor diagnosed and replaced the right rear
wheel sensor for $95.00. They charged me the diagnostic
fee, and the price for the part. $30.85 for the sensor, and
$59.95 for me not to have to crawl under the thing in the
rain, and mud...
 

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I just changed my right (passenger) rear wheel speed sensor. ABS, BAS, ESP and traction control lights came on along with the "Service 4WD System" message shortly after hitting a serious pothole. Checked for codes and got U1418, which is a bad right side wheel speed sensor. Funny thing is I hit the pothole on the left (driver's) side. Anyway, the code does not tell you if it is the front or rear. I bought the rear with my fingers crossed because it is the cheapest and easiest to change. I picked up the sensor (Duralast part #SU8585) at Autozone for $14.99.

The sensor is easy to change. The hardest part was getting the sensor out of the hub. You might be able to do it without taking the tire off but I couldn't. It required quite a bit of jiggling and prying with a screw driver. It was in there good.

I got the new sensor in and drove about 10 feet and all the warning lights went out. I lucked out and picked the right one. All good now. Well, except for the water leak when it rains. That's the next project.
 

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How did you check for code U1418? Did you do the Key Dance? or have the Dealer read it? Do you have a higher level scan tool?


Reason I ask, I thought the ABS codes were NOT part of the OBDII codes that spit out from the Key Dance, but part of the proprietary codes that the manufacturers keep from the owners to push them into the Dealership to pay for diagnostics.
 
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