Purchased my 2006 H3 new it now has 221,000 not trouble free miles on it. The check engine light has been on more than it's been off with the 0326, 0327 trouble codes. The knock sensor has been replaced twice, once by me and once by the dealer (joke). I've changed plugs, replaced coils X 6 (one was replaced twice) and started running 89 octane gas to preclude prefire. Dealer can't tell me why it keeps coming on or why it's sensing a not obvious knock. The ECM has also been reprogrammed to the latest software. One of the members suggested that I should start another thread and chastised me for taking it to a dealer. Well...here's the thread guys, anyone have an answer?

 

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The KS signal circuits are shorted to voltage or ground. When testing any circuit for open or continuity/ resistance, it is imperative that all related terminal pin fit and tension be checked when the test steps require disconnection of the connector or component, prior to any component replacement.

 

I am not even going to chastise you for the X 6 regarding your 5 cylinder 3.5L.

I do have to ask, what exact spark plugs did you use for replacements?

 

Doc Olds, I replaced my plugs with AC/Delco 41-103, gapped at .043.

 

Good, that will remove those as a potential cause assuming the coil on plug packs are properly seated.