P0652

[Alex8976]

In dire need of help on diagnosing a p0652 on a 2006 lbz. Cannot find any nicked or chaffed wires. Was told it started way too fast and had low rail pressure. Replaced rps and test drove it was running like a top for 5 minutes then immediately lost all throttle response rpms went to 0 and mph stayed same. Pulled over put it in park and it threw the p0652 code. It proceeded to lope in all gears turned it off and waited, turned it back on and same result. Tried to clear the code and it came right back. Any help is appreciated!


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[Ron Nielson]

Maybe something in the attachment will prompt you to look at something differently. From your description sure sounds like short maybe in the APP sensor/circuit

 

[Alex8976]

Also when I finally got it home I cleared the code and started the truck had 5 sec of clean idle then started to lope and and throw same p0652 code. Along with an ecm p0700 and u0100 code same pcm and tcm lost connection. Could it still be a short in the APP

Thank you for that forum!


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[CarterB11]

Also when I finally got it home I cleared the code and started the truck had 5 sec of clean idle then started to lope and and throw same p0652 code. Along with an ecm p0700 and u0100 code same pcm and tcm lost connection. Could it still be a short in the APP

Thank you for that forum!


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Did you ever figure it out? Having the same issue on my 06 and it’s kicking my a$$


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