P0332 Knock sensors code back....

[aces-n-eights]

About 6 months ago i replaced the knock sensors and harnesses in my '06 Tahoe. This cleared the code and the truck has been running fine. Actually it ran fine before the replacement, but i wanted to clear the CEL.

Well, the CEL popped again and it's the same P0332 Knock Sensor 2 Circuit Low (Bank 2). No change in engine performance, runs fine.

I've cleared the code and will see if it comes back, but any advice if it returns? I'd be surprised if they have failed so soon.

Thanks guys.

 

[SnowDrifter]

Did you replace the knock sensor harness when you did the sensors?

 

[Tonyrodz]

Did you replace the knock sensor harness when you did the sensors?

He states that he did. I wonder if there's water in them? Guys build sort of a dam using rtv to divert water away from the sensors. Was that done to yours?

 

[SnowDrifter]

Ugh fml. Functioning on 2 hours of sleep is difficult.

 

[aces-n-eights]

Yeah, replaced both sensors and harnesses. And yes, i did the work and did the RTV dam trick. I'd be surprised if water got in there...maybe, but the original sensors took 13 years to go bad... Could there be some glitchyness in the ECU? That's where the KS's plug in...right?

 

[Tonyrodz]

Yeah, replaced both sensors and harnesses. And yes, i did the work and did the RTV dam trick. I'd be surprised if water got in there...maybe, but the original sensors took 13 years to go bad... Could there be some glitchyness in the ECU? That's where the KS's plug in...right?

I honestly don't know about that, but if it was me I'd clear the code and see what happens. It could just be one of those things, and never come back.

 

[Scottydoggs]

when installed did you tq them to the proper tq setting? it matters a lot.

 

[aces-n-eights]

when installed did you tq them to the proper tq setting? it matters a lot.

Hmmmm, probably not... just got them good and snug... How will this affect the way the sensors work?

 

[Scottydoggs]

all i know is ive been told it matters. iirc it was 14 fp. to tight they might read false kr, not sure that they would fail from it tho.

 

[aces-n-eights]

Gotcha, thanks. I'll do some more research. Fingers crossed the CEL will stay out, but i have a sneaking suspicion it will come back...