need knock sensor expert help with 332 327 codes
 

I have a 2007 lq4 with a magnacharger on it and I started getting the 332 327 codes for knock sensors. I did install a/c delco knock sensors with a dorman harness. Wiring checks out ok and resistance checks out ok on the sensors. Added grounds and moved my alternator wiring and codes remained. I then took my old wiring harness with old sensor and screwed them into the right front cylinder head. then plugged them in and drove it. I have not received the codes since I moved the sensors. Has anyone else received these codes with a magnacharger. I am wondering if it picks up something from the supercharger that is causing codes.

Is your valve train stock or modified?

engine is stock with stock everything except for supercharger. It is a very quiet engine especially compared to other lq4 engines I have had with noisy lifters that never had any knock sensor codes.

I know in the past people have had issues with the Dorman harness as well as anything but OE Sensors.

I replaced mine with the Parts store brand and it failed 3 months later. I went to the junkYard and got a used one and no more issues.

Parts store brand looked like and OE part that was reboxed. I don't know if there handling them different or what. Maybe it took a rough ride.