P0325 code.

Post by **rguzz** » 10 May 2018, 17:26

I've chased this code for a while, though I replaced both knock sensors (Bosch) while intake was off to service PCV 2 years ago, 1996 850t. Started coming on again at random. Had both front and rear engine mounts replaced which were in need. Other mounts I did myself a while back. Car runs very smoothly and code has not come back so far. So, maybe everyone knows this, but apparently bad mounts should be considered when P0325 pops up and car seemingly runs okay, or unchanged. I'm reminded how bad motor mounts can creep up on you and how remarkable the difference in ride quality exists after new ones are installed. Hope this really does it!

Post by **RickHaleParker** » 11 May 2018, 10:30

Check the wiring to the knock sensor.

Possible source

short-circuit to ground in signal cable
open-circuit in signal cable or ground lead
contact resistance in terminals
defective knock sensor (KS).

Post by **abscate** » 11 May 2018, 12:11

Its never the knock sensor. Its rarer than the ECU.

If you are getting poor running, its common to get a knock sensor code which is from misfiring.

Post by **rguzz** » 12 May 2018, 12:16

Yes, probably never needed replacing in the first place. Runs great now, if I don't post again it's because things continue to be well and no more P0325. I will attribute code to bad engine mounts as it has otherwise been running like clockwork. Thanks.

Post by **abscate** » 12 May 2018, 12:56

Im one of the few fools who paid $100 for new knock sensors when I got the code, and it didn't do anything except educate me.I did recover the good karma by donating them to a guy in France who cut his by mistake

Karma has been good to be in turn.

Post by **rguzz** » 12 May 2018, 15:23

I guess I'm one too...though I'll defend myself by saying I was in there anyway and the ones I took out were 20 years old. Reminder, though to think of everything else first.