Help P0332H intermittent code
Thread Starter
Intermediate
Joined: Sep 2006
Posts: 28
Likes: 0
Help P0332H intermittent code
I replaced my engine 1 year ago . I swapped the LS6 stock engine by a LS2 427. It has been working properly till a couple of months ago when a P0332H was triggered. As it was a historical code I deleted it and continued driving her. We have cleaned all the conexions , specifically the KS rear and it looked like everything was OK. However, it has appeared three times more as an historical code again. Everytime it happens the car starts to work badly, it seems like has less power when the engine temperature raises high at a normal operating range.
Any suggestions?
Many thanks
Any suggestions?
Many thanks
Le Mans Master
Joined: Aug 2005
Posts: 5,375
Likes: 328
From: CA.
St. Jude Donor '13-'14-'15
A low frequency code is usually a false code on any modded or retrofit application---however when the code pops up the ECM goes into some sort of timing reduction mode to protect itself--Most likely the low octane timing table
--You can " de-sensitize" your knock sensors in your tune to make the code not appear--I assume you may have LT's as well and those often cause Frquency sensor codes too--
--You can " de-sensitize" your knock sensors in your tune to make the code not appear--I assume you may have LT's as well and those often cause Frquency sensor codes too--
Tech Contributor
Joined: Jan 2007
Posts: 19,354
Likes: 1,126
From: Dyer, IN
Just because a "false" knock is sensed, does not mean it generates a code. Many of us with FI have experienced this, and watched the PCM pull timing on the dyno....with no code whatsoever. In this case, you can either isolate the noise, or desensitize the KS. In the OP's case, he has a solid code, that indicates a problem with the wiring, or knock sensor itself. Those items should be investigated first, before changing the tune. An improperly torqued KS can also cause issues as well.
