Check engine light.

[Teller116]

So I need help again. This time with an electrical issue, I think. So here goes.

Today I was driving my 2019 classic big horn on and off all day. Then this afternoon I backed into a parking spot and the dash lit up like a Christmas tree. Check engine light, parking brake light, ABS, service electric throttle control system, service anti locking braking system, auto stop disabled, battery light, the lightening bolt light at bottom and the speedometer went to - -. This also caused the shifter to be stuck in park. I turned the truck off and restart it. All lights came back on and still stuck in park. I then removed the neg battery cable for about 30 seconds then reconnected it. After that it started and ran just fine but the check engine light stayed on. I got it home and used my reader (cheap) and it showed no codes thrown. I took it to a local owned auto parts place and their reader said ABS module issues and I’d have to take it to a shop to be diagnosed. I took it to my local Autozone and they checked the battery and checked codes. Battery came back great full charged and no issues. The reader came back showing abs sensor issue. The guy their said that the sensor could be bad or it could just need reconfigured. He said it’s kinda like a Bluetooth sensor that could have lost connection. He looked up the prices for the sensors and tried to look up an ABS module and it showed up non applicable. He said that means the sensors connect to the main box and not a separate box just for ABS. I’m not sure what the issue could be. He cleared the code and it drove just fine back home and back to town and back home without the check engine or any other light coming on.

 

[Jeepwalker]

My first inclination was the battery. But you had that checked. Good move! What do the connections look like? I guess I would quadruple-check those. And then check the connection of the + at the starter. There have been some forum Ram owners over the yrs who've had that big starter wire work loose.

Another possibility is the WIN module was flaking out that one time.

Could be the wheel sensor too. I'd probably go Mopar on a new one...but.

You might quadruple-check the ground wires are good and snug.

 

[Teller116]

I had a starter issue in the passed, haven’t replaced the starter. The starter tested fine then but I was told on here that it’s possible the starter is still bad and might have a bad spot on the starter.

 

[Teller116]

Thread 'Need Help possible starter issue'
https://www.ramforum.com/threads/need-help-possible-starter-issue.210141/

 

[62Blazer]

Just saying "ABS sensor" is pretty generic.....there are several sensors related to the ABS. There should be more specifics to that code that points to a more specific sensor/location. To be honest a little confused on the whole bluetooth reference. No offense to anybody that works at Autozone or other big box stores, but that is the last place I would get automotive repair advice from.
Back to the original post, I would suspect the issue you described as a major power or ground feed connector or wiring harness was loose. A single sensor will not cause wide spread havoc over multiple systems like that.