Celine

Hi,
My check engine light came on and the code is 1 1 3 1 for knock sensor 1. I do not notice anything different with the car (I read other threads where people say the idling is terrible but mine is fine). What do you suggest I do? I was thinking about resetting the check engine light and see if is triggered again but I do not even know how to do that. Any ideas?
Thank you

RajDatta

Good call on re-setting it. Who knows how long it's been on for.

Celine

do you know how to reset the check engine light? thank you

kwikt

I usually disconnect the battery for a few minutes then reconnect.

az968gpw

I just replaced knock sensor #2, no driability issues, it only comes into play if the engine encounters a "knock" situation, I understand. So you probably wouldn't notice anything. But, yeah, clear the code and see if it reoccurs.

Celine

Thank you for the replies, I will try disconnecting the battery.

Celine

I cleared the code and the check engine light came back on a few days later with the same code for knock sensor 1. Not sure what to do next. Any advice?

az968gpw

Sounds like time for a new knock sensor. Got a good price on mine from Scottsdale Porsche, also Sunset is a good place. Be sure to order the install bolt as well, its a one-and-done bolt.

It is something you can replace yourself if you have backwards-bending fingers.

thomasmryan

Codes kinda tell you what to look for but not nessesarily the problem. We will assume you have tier 1 premium in the tank....(if you don't, you should.) have you ever looked at the cam chain teeth?

Two cases.

Bad part.

Your knocking.


If you have some loose change, replace both knock sensors. Good time for new intake gaskets, aos seals and a RTV swirl on the rear upper balance seal.


OR...you could get the durametric cable with the adapter and see what conditions are making the car knock...if it is a mechanical thing. Josh/rouge may still have the software and the good cables are available from the UK.

kwikt

Just replaced mine a month ago with the CODE. Took 10 minutes with a universal on a 13mm socket. Used a cable claw thingy to hold the new one in position while I lined up the bolt.

az968gpw

Yeah, the front one looks a lot easier. Took me about 45 min to do the back one, didn't have the cable-claw-thingy tool so it was a lot more frustrating. Thus the finger-bending routine.