Constant knock sensor code - 850R

jnewt · Post by **jnewt** » Sat Aug 22, 2020 6:36 pm

Knock sensor code tripped when I was going 30mph barely any throttle. When I clear the code it comes on immediately after restarting the car, within a second or two at most. Is it possible to reach the sensors without removing the manifold?

Post by **erikv11** » Sat Aug 22, 2020 11:53 pm

It's really tough to reach them but you can.

This code is almost never an actual knock sensor problem - usually the wiring is damaged or connections are dirty.

Post by **abscate** » Sun Aug 23, 2020 4:07 am

What year is this? What code is being read? Many readers don’t map the p code to text correctly

jnewt · Post by **jnewt** » Sun Aug 23, 2020 6:15 am

abscate wrote: ↑Sun Aug 23, 2020 4:07 am What year is this? What code is being read? Many readers don’t map the p code to text correctly

1996, code P0326 - Knock Sensor 1 Circuit Range/Performance (Bank 1) is the exact text

Post by **abscate** » Sun Aug 23, 2020 8:39 am

You will find very few clear this code with replacing the knock sensors, it’s usually poor running, wiring, or corrosion

Don’t overtughten the sensor or you will break them. Look up the spec torque, it’s low. Can’t be too loose either

850oldschool · Post by **850oldschool** » Sun Aug 23, 2020 8:56 am

It’s possible to wriggle your hand in there. and also to view with a mirror. My wire was severed, perhaps by a rodent.

jnewt · Post by **jnewt** » Sun Aug 23, 2020 9:55 am

abscate wrote: ↑Sun Aug 23, 2020 8:39 am You will find very few clear this code with replacing the knock sensors, it’s usually poor running, wiring, or corrosion

Don’t overtughten the sensor or you will break them. Look up the spec torque, it’s low. Can’t be too loose either

I reached my hand behind the intake manifold and wiggled the connector a bit and now no more code, I’m almost certain it’s the wiring and I’ll have to get in there to fix it. Thanks