I am not sure that you have a pcm issue yet. There are no serviceable parts inside of that pcm and the gelled coating encapsulates in the heat until it malfunctions.
The codes/symptoms can be reset a number of times by disconnecting the Pcm. Is there any way of contacting the former owner to see if they have had any of the following symptoms:
A hard shift from 1st to 2nd when cold, high transmission temperatures, O2 sensors showing bad when good are a few.
Thanks,
Mark
Thanks for your reply mark,
I've had a bit of contact with the previous
owner last year but not since then , from my understanding he only really had the jeep about a year and sold due to having a job change and needing higher mpg for commuting, so that plus the pandemic I doubt it was driven far in the past year, I've had the jeep for about 2 and a half months at the moment. Personally I've not experienced any high transmission temperatures , I presume signs of this would be ouders, gears slipping and hesitation ? That kind of thing ? I've not had anything like that. There is a bit of a roughness between 1 and 2 occasionally but I don't know if it's just cause I'm not used to autos , I've only driven manuals up till this, apologies I know it's not much help. I know the o2 sensors were replaced but this was done by a mechanic as I've got an invoice for it, so I presume it threw a code and they were changed without question. I'll definitely try and get in contact with him to clarify his side though