Weird CEL action

[Pineapple124]

2005 lj auto
Hi all, so over the last few months I’d get a cel light showing all 4 o2 codes, 0031, 0037, 0051, 0057.
Sometimes it would clear on its own after a few days and sometimes id clear via battery disconnect.
Probably about 6 times, and 3 in the last month alone, that all cleared on its own.
No drivability issues or changes thru all this.
Last year all O2 were changed at the first cel. Used the proper sensors.
Maybe the computer? It has occasionally hard shifted 1-2 and uphill 2-1.
I’m curious. Any ideas?
Thanks
Will

 

[JKP]

It's your PCM.

Multiple threads on 05 and 06 PCMs going out.

@Wranglerfix has the only known solution for these PCMs.

 

[Chris]

@Wranglerfix to save the day!

 

[Wranglerfix]

@Pineapple124-it is your pcm that has failed you. You can call me tomorrow to discuss in further detail. Thanks!

 

[Pineapple124]

You guys rock!
Thanks
Will call wrangler fix
Cheers
Will

 

[Pineapple124]

Wranglerfix has saved the day!
Thanks to Mark and Jami for getting it to me so quickly. I didnt think my 1-2 shift was that bad, its now almost as smooth as my lexus. Thanks all for pointing the way
Cheers

 

[AndyG]

Wranglerfix has saved the day!
Thanks to Mark and Jami for getting it to me so quickly. I didnt think my 1-2 shift was that bad, its now almost as smooth as my lexus. Thanks all for pointing the way
Cheers

Mark is actually putting in some better shift points and other parameters into his pcms.....He is constantly trying to give his customers the best.