Check engine, ABS, and traction control throwing multiple codes?


BrainyheadJKU

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Joined
Nov 6, 2020
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17
Location
Ft. Worth, TX
Ok so I have a 2013 JKU and it keeps tripping the ABS, and traction control and check engine light, when Im driving around 60-70 it trips the codes and goes into lip mode, and Jeep won't go faster than 60 MPH. I do not get a red brake light on, but have seen it pop up a few times in the past. Does this sound like the ABS control module? I replaced a rear wheel speed censor, but this is still doing it. I have a superchips so I can check the codes, right now it shows P0344 cam shaft pos sen bank 1 or sigle sens, u0121 lost comm with ABS ctrl MOD C121C torque signal denied, B162c Left low beam control circuit high, B1630 Right Low Beam Control circuit high, B1638 Right Hi Beam control Circuit High, B1634 Left Hi Beam Control Circuit High, U0121 Lost coms with ABS Ctrl Mod. So a total of 8 DTS showing. I can clear them, but they always come back after a drive on the highway.

Any one?
 

BLACKJKU

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Feb 22, 2020
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Huntington In
Is your steering wheel centered when going straight down the road? Is your speedometer calibrated since you have oversize tires?
 

MacGuyver

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May 13, 2020
Messages
360
Location
Wisconsin
Those certain roads probably have 'wagon tracks'. At least that is what I think of them as. Cars tend to travel on the same path on the road and wider tires don't follow the pattern making driving on these roads annoying. Older country roads around here do that often.

As far as your issue, just to verify, have you checked that the ground wire is tight? A loose negative battery cable is like a gremlin maker. Strange things happen.
 

xackley

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Joined
Nov 29, 2019
Messages
76
Location
finger lakes of NY
If all these symptoms happened at the same time, I would first try to find a bad grounding point.
Chrysler is infamous for making some of them hard to find. The culprit might be found toward the bottom of the engine.
Look for green. Gently tug on suspects.


Search for Wrangler JK Ground Locations you should get some help in locating.
 
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Largehit71

JK Enthusiast
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Joined
Jun 17, 2020
Messages
225
Location
Jackson MO
Had theABS traction control thing yesterday on my way to camping. It’s only in one spot on the highway there every time then it goes away. Lol. My Jeep must not like that spot.