Check Engine light/Service Electronic stability control/ESS not available

[Zerokharma]

Ok I wasn't sure what thread to put this in so I stuck it here. I found a few threads talking about this but I could not find what people did to fix the issue. Saw alot of people took it to the dealership to be fixed. I was just wondering if anyone else had this issue what exactly they did to fix it.
I will get the error messages at the same time, then the check engine light comes on. After I turn the engine off the error messages are gone but the check engine light will remain on till I turn it off again. It might be fine again for a day or two then it will happen again. Does anyone have any idea what to do here?
Guess I didn't say it is the 2.0 L. Any help would be greatly appreciated.

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[Heimkehr]

If the battery in your '20 is original to the vehicle, consider replacing it as a prophylactic measure. If you've a two battery system, which includes the smaller ESS battery, replace both at the same time.

Batteries that are reaching the end of their practical service life can be the source of seemingly unrelated electrical issues.

Something to consider doing now, at no cost, is to remove the glove box door and wiggle each connector in the two CANBUS blocks while the engine is running. If anything goes wonky after disturbing any of the connectors, which indicates a connection problem, replace the CANBUS block in question (or do both for peace of mind.)

 

[Zerokharma]

Yeah changed both the batteries last year. I’ll try the CANBUS this evening.

 

[GATORB8]

Also, pull the code. The error may be something else that the Jeep won't use Stability and ESS because of, so don't assume those are the core issue.

For example, if the steering wheel is off center by too much, it will lock out stability and cruise control.

 

[Zerokharma]

Ok so I shook the cables in the CANBUS and nothing. I’ll have to find my scanner to read the error codes. Thanks for the suggestions so far.

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