Repeated knock sensor code P0332
Thread Starter
Heel & Toe
Joined: Aug 2021
Posts: 18
Likes: 0
Repeated knock sensor code P0332
After cylinder #7 broke a ring land, my son & I rebuilt the LS6 in our 2001 Z06. However, now it's back in the car and running we've had repeated P0332 codes from the first time we drove it. We put in a new harness (twice), new sensors (twice) & checked for crimped wires - it all checks out: resistance & response to tapping the block with a hammer are as expected - then we drive it 30 miles, the CEL comes on & we're back with a P0332 code.
We've been careful torquing the sensors down to 180 inch/lbs.
Is there another cause for P0332, other than bad sensors or wiring?
We've been careful torquing the sensors down to 180 inch/lbs.
Is there another cause for P0332, other than bad sensors or wiring?
Melting Slicks
Joined: Jul 2004
Posts: 3,294
Likes: 480
From: Brea CA
Which sensors are you using? Some brands are better than others.
No I did have an issue when replacing them on my car, used GM AC Delco sensors. One of them was dead out of the package. Replacement was good.
Gary
No I did have an issue when replacing them on my car, used GM AC Delco sensors. One of them was dead out of the package. Replacement was good.
Gary
Drifting
Joined: Mar 2018
Posts: 1,365
Likes: 414
From: New Jersey
After cylinder #7 broke a ring land, my son & I rebuilt the LS6 in our 2001 Z06. However, now it's back in the car and running we've had repeated P0332 codes from the first time we drove it. We put in a new harness (twice), new sensors (twice) & checked for crimped wires - it all checks out: resistance & response to tapping the block with a hammer are as expected - then we drive it 30 miles, the CEL comes on & we're back with a P0332 code.
We've been careful torquing the sensors down to 180 inch/lbs.
Is there another cause for P0332, other than bad sensors or wiring?
We've been careful torquing the sensors down to 180 inch/lbs.
Is there another cause for P0332, other than bad sensors or wiring?
Thread Starter
Heel & Toe
Joined: Aug 2021
Posts: 18
Likes: 0
First set were branded Dorman. 2nd set were Amazon no-name knock offs. We've tested every sensor using a DMM for resistance and AC voltage generation prior to installation.
Might go to the dealer....though I'm getting sticker shock at their prices: $100+ for a simple low-tech commodity part!
Might go to the dealer....though I'm getting sticker shock at their prices: $100+ for a simple low-tech commodity part!
Thread Starter
Heel & Toe
Joined: Aug 2021
Posts: 18
Likes: 0
Will give it a try. You just used contact cleaner on the PCM & plug?
Drifting
Joined: Mar 2018
Posts: 1,365
Likes: 414
From: New Jersey
I used Progold. It's a contact cleaner/restorer. I just used it on the harness connector that goes to the PCM. I didn't touch the PCM connector. I used a hard bristle brush to try to wipe the contact with the progold. So far it's worked for me. Good luck.
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