Happy to be a new member of the Forum. I have been reading post for a while but just officially joined. I have a 2013 Jeep Wrangler Sport 2 door that I bought brand new. I used it as a daily driver until 2019 but continued to drive on the weekends. Then because life happens, it sat for over a year. I got it back running in October but it showed that cylinder 5 was misfiring. I changed the spark plugs, coil packs and fuel injectors and that problem seems to have resolved itself. Yesterday I was driving it and the instrument panel started flashing off and on. I popped the hood and the negative battery terminal was completely detached from the battery. I attempted to tighten it back down but even with it as tight as it could go, it continued to slip off. I then replaced the battery terminals to get it more secure. After doing so, it had 9 DTCs flash up. I tried resetting them but they immediately came back. The codes are U1404, C121C, U0401, U0184, P2111, P0222, P0123, U1400 and P0113. The P0113 code is probably because the air intake sensor was damaged when reinstalling the intake. Everything else sounds electrical. Is it possible that the PCM was damaged from the battery disconnecting while driving? Any ideas would be greatly appreciated.

 

I’m sorry no one responded but I’m having the same issue. What was the solution?