Codes PO141, 135, 155, 152, 141 and 135

AXEGRINDER

MEMBER
2000 JEEP GRAND CHEROKEE
4.7L
V8
4WD
AUTOMATIC
185,190 MILES

Why am I getting all 4 02 trouble codes for 02 sensors? I had all 4 02 sensors replaced since I had the trouble codes for it and I still continue having these codes. I’ve had the codes wiped and they came back up the next morning that I had them wiped. I had the fuel injectors and 02 sensors replaced and that’s when the check engine light turned off but the next morning came back on again after the codes were wiped. What should I do? I have no idea what I could be and it’s been like this for a while.
The codes are po141, 135, 155, 152, 141, 135

1 Reply

KASEKENNY

MECHANIC
18,907 POSTS

More than likely you have a failed PCM or possible ground issue. I attached the info for one of these codes and we basically just need to run through this info from the manual and see what this comes too.

I expect the PCM will be the issue however, the possible causes are o2 sensor wiring issue, sensor issue, or the PCM.

Here is a guide that will help with this testing:

https://www.2carpros.com/articles/how-to-check-wiring

Below is the info that you will need to complete this. Please let us know what you find or what questions you have. Thanks

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