A little help with O2 Sensors DTC's please

[Excell]

Guys,

I've tossed a P0135 and P0155, HO2S11 and HO2S21 Heater Circuit Fail.

I replaced both O2 sensors and cleared the codes. The DTC's return right away. Are these two circuits tied to eachother in some way? Maybe share the same ground?

If anyone can help shed some light on why the codes remain and/or what I can check to resolve the issue, I would appreciate it very much.

TIA.

 

[dogfriend]

From the 97 Powertrain Manual

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[dogfriend]

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[dogfriend]

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[dogfriend]

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[Excell]

On a KOER test I throw a P0605 - Internal Control Module ROM Error... I thought it might be due to my Apten chip. I wonder if my PCM is just screwed....

 

[dogfriend]

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[dogfriend]

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Its possible that you have a PCM problem, but I would check out all of the other stuff first

 

[dogfriend]

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[dogfriend]

oops I forgot step 2

 

[Excell]

Thanks dogfriend.

Got any of those for a P0605?

 

[dogfriend]

Youre not going to like this...... I would try removing the chip if possible to see if it might be causing the problem. Good luck.

 

[Excell]

Son of a *****.

 

[Excell]

I just removed the Apten and the problem remians. Crap.

Where the heck do you find a new PCM other than the dealer?

 

[dogfriend]

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