So i made a post about this last fall, but i haven't found the issue yet and it seems to be getting worse. Im currently getting code P0031, P0037, P0051, P0613, P0700, P1604. These are all 4 O2 sensor heater codes, two transmission controller codes, and a PCM code. I'm also getting occasional codes about lean fuel mixture. I haven't had any actual issues with the engine running as it hasn't lost any power other than an occasional rough idle and one misfiring incident. I was driving up my road which is a pretty steep dirt hill and all of a sudden i lost power and the check engine light started flashing. I slowed way down and it went back to normal. Happened 2 more times about a minute later, but hasn't happened since. Other than these it runs completely fine. I feel like this should all point towards a bad PCM except that I replaced it this winter with one from Ares Technologies on ebay. However, it too gave all 4 02 sensor heater codes on the 2nd startup so i sent it back assuming it wasn't the problem. I have cleaned the ground strap that causes this issue sometimes, and inspected the o2 sensor wiring but didn't find anything. I didn't check the voltages though, so if your know the procedure for this let me know as I have a multimeter but can't find what i'm supposed to look for. It has given me the Pcm and transmission codes in the months since though, so at this point i'm guessing that either the PCM i received was also bad, or that there are multiple issues going on unrelated to each other. Let me know if you've experienced anything similar or can think of what the problem could be, im pretty lost right now. Thanks for any help.
Edit: Jeep is an 05 Tj with the 4.0 and an automatic transmission, forgot to include that
Edit: Jeep is an 05 Tj with the 4.0 and an automatic transmission, forgot to include that
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