[Kanding]

Hi Guys,

I have a 2002 Forester, about 100k mi and a few months ago the CEL turned on and the code was P0328- knock sensor high voltage, which seems to be a common problem from what I read on the forum. I replaced the knock sensor, and everything ran fine until last week. Now the CEL is on again and same code comes back... any ideas?

 

[Peaty]

Did you torque it down to the proper spec.?

 

[flstffxe]

^^ and set the proper orientation?

 

[Kanding]

Thanks for the responses,

I marked the orientation of the first sensor before I removed it, then torqued the new one to the spec. listed in Haynes. Could a wiring issue cause this problem?

 

[absubtle]

Is this new knock sensor a Subaru OE part? Also, have you checked all the grounds on your intake manifold? Corrosion free?
Absubtle
CO

 

[Kanding]

Is this new knock sensor a Subaru OE part? Also, have you checked all the grounds on your intake manifold? Corrosion free?
Absubtle
CO

It is not from the dealer, I ordered it from Rock Auto. However, I replaced various parts with their components in the past and I never had a problem.

I remeber the plug connection was clean, but I did not check the ground wires nor the quality of the sensor wiring. I will take another look tonight.

Thanks.