New Jeep + Fix

[Heatheopioa]

Me and my wife just bought our first jeep in 15years. 2012 JKU sahara. Our last jeep was a 94 yj. on the way home the check engine light came on. low voltage o2 sensor bank 1 sensor 2. Changed it. two days later light back on. this time codes low voltage bank 1 sensor 1 and 2. Changed the other sensor. Then later that day when coming to a stop, it died on me, and then it died on my wife sitting at idle at chic fil a drive through. I ran all of the info I had through ChatGPT and it told me to replace the crankshaft position sensor. So I changed that, all the codes went away, and the jeep rides smoother that it has since we got it.

Im sure its been shared a 1000 times, but thats my experience with her so far.

 

[BLACKJKU]

Also dirty or broken grounds can cause alot of electrical issues, running a new ground from battery to the engine will help.

 

[Cimmerian]

JKs are electrical nightmares although I hear the JLs are somehow worse.

 

[Heatheopioa]

So the p0137 code is back. I installed a spacer on the sensor, with no change. a couple of things ive read said to check the voltage at the harness, or use jscan to check the live voltage reading. that it's common on these models for one of the harness wires to get messed up. Any other things i should check while i have it apart?