I replaced my KS a year ago more or less and I still get that stupid ghost code for my KS, and its making my car run in safe mode. Ive checked several times with my multimeter the resistance of teh KS and it has perfect reading (~500k ohms). Same thing with teh harness leading to teh ECU, same reading. Whats the deal? Why do I still get it, it ****es me off.

Did you ever reset the ecu?

Andrew

You dont have any o2 sensor failures? I think it comes on with o2 sensors... I just ran the codes on my car and I get 0707 for rear o2 but since I put in that resistor no more knock sensor code.. Didn't you have other codes? 2 o2 sensors? From your other post.

as previously stated: reset the ecu and see if it comes back on again.

My rear o2 sensor was tripping the ks code...

i just recently got my frotn o2 sensor and rear o2 sensor code, but before I had the KS code I had no other codes whatsoever. perhaps this whole time I had a bad rear o2 sensor and I didnt get a code for it, making the KS go bad, is that possible, only way to find out is to get new sensors =P

Your O2's were slowly wearing out and causing your engine to ping under load. That ping was detected by the KS & your timing was set back to protect your engine (thats what it's supposed to do) and the KS code was set.

Replace your old O2 sensors and two things will happen.

1) You'll get some power back.
2) Your KS code will go away.

So wait, I have a bad KS and a bad O2 sensor, and if I replace only the KS, I still won't get any power back because of the 02? I thought a bad 02 didn't affect performance, but just gas mileage.

You don't think getting bad gas milage is a sign that your engine is not performing the way it should? Rethink that statement. And you should check your KS directly before assuming that it's bad just from the code. Like was pointed out, a bad o2 sensor can (correctly) cause a KS code to be thrown. A KS code doesnt necessarily mean your knock sensor is bad, it means your knock sensor is detecting knock, which is what is should do.

How does that work? So you're saying that the knock sensor code means that it's detecting knock, not that the sensor is bad? If the sensor breaks and stops working all together, you wouldn't get a code because it wouldn't be detecting any knock? The only time you could get a code is if the knock sensor is working. And everytime you get knock, the sensor code is tripped and you have to reset the ecu again? I don't want to have to check/reset my code after every drive.

The KS code is set when the voltage or signal from the sensor falls outside of the acceptable range. That can happen from excessive knock & ping caused by a faulty or failing O2 which can cause a poor performing engine, or the KS sensor itself gone bad.

If your KS measures good or you've replaced it recently and are still getting the KS code, then you have another problem. O2 sensors are usually associated with poor performance and engine ping. Excessive carbon build up in the combustion chamber can also cause knock and ping and set your KS code.

Wouldnt carbon build up or o2 sensor failing create a code? even if it is not completely bad but in the process? If not then maybe the age of my sensors can be why the KS is going off.

As your O2's wear out, your engine performance slowly goes down hill untill finally there at the point of failure and your CEL comes on. But until that happens you have a poor running engine. Yes the age of your sensors are showing. It's not uncommon for O2's to wear out. Depending on how they degrade, you'll run rich or lean which can cause poor performance, poor fuel economy and engine ping.

WHy is it that io have these 3 codes and not one has teh CEL come on?