[rumble13]

I picked a 2015 JK Unlimited that was hit in the left front corner. It is a sport model. I put a rubicon 44 on front, (sleeved and gusseted already), REPLACED .......radiator, core support, fender, fender apron (structural piece), grill, Headlight, ( I have new seatbelts and airbags coming).

Anyway, I disconnected the front drive shaft because the gear ratio is different now and I have not regeared it yet. The ABS, Check engine and traction control lights are on solid. and Jeep is in LIMP MODE!!, Could the different gear ratio in the front end cause limp mode or any other of the issues? the motor runs fine,

Any help would be appreciated, I am at my wits end and am thinking about selling it outta frustration, but I would rather fix these issues, I just don't know enough.

Thanks in advance.

I am in SOCal near Temecula ,if anyone knows somebody with some jeep knowledge that works for a fair price

 

[rumble13]

some of the Codes
U0121
U1120
U1110
P0113 Intake Air Temperature

 

[rumble13]

I just read a post on wranglerforum , the guy had 1500 miles on his 2014, he said bad abs connector and everything perfect now, anyone else heard of this?
can I swap that myself? the wires on mine were messed up the driver side, I respliced the wires, could that be the issue? do I need a new abs sensor? is it at the axle
?

 

[mrwhipple]

Have you changed the gear ratio by any chance? If so, you can reset that with a procal.

 

[rumble13]

I used the procal on my last jk, I haven't touched the ratio in either axle yet. that's why I have the front driveshaft disconnected,

 

[belbecaa]

After re-reading one of your posts, your problem is either in your repair of the damaged wires, or deeper (bad module)... Sounds like the EBCM isn't communicating.

Some info on the codes:

U0121 is a generic code: Lost Communication With Electronic Brake Control Module

Got this info from another forum: (These are Manufacturer specific codes)

"U1110 means the PCM didn't receive a vehicle speed signal from the Anti-lock brake Module over the CAN C bus. Are you sure this wasn't accompanied by U0121? If not, you need a new PCM. If you have the U0121, then you may just need an ABS module.

U1120 is a lost wheel distance message. It has the same possible causes as the above. Both can also be caused by a short in the CAN C bus as well. You need a mechanic for this one, unless you have the proper scan tool to run a Powertrain Verification Test."

 

[rumble13]

I had a 0121 on my little obd scan tool, when I did the key thing it popped up just the two codes on the dash. I replaced the abs sensor that had been damaged prior. did the battery cable thing. still have the Christmas tree dash and limp mode. I have not replaced my airbags yet, does that set everything off also?

 

[rich6700]

Replace the air bag the computer may be seeing it is in an accident and putting it in limp mode

 

[rumble13]

I was thinking that, but none of the 3 codes its giving have to do with the airbags

 

[rumble13]

things changed at work for me recently, I am ordering more parts, but threw it on ebay, lol. I just don't have extra time right now, but I will keep working on it as much as I can, prob wont sell anyway, when I get It done I will be happy