I have a 2014 Outlander GT and the check engine light came on the other day. I checked the code and got P0327 Knock Sensor Bank. I erased the code and it came right back. I've done this three times now with the same result. I haven't really noticed any changes in performance. The only thing is that it doesn't seem to have the get up and go from a stop that it usually has. Car only has 28K. Dealer can't get me in until sometime next week but I have a 1400 mile roadtrip this weekend. I'm driving from MN to KY for my 20yr high school reunion. I'm just worried that after an extended period of time that issues might happen and I don't want to be stuck in the middle of nowhere. Looking for advice.....Thanks!

 

all the knock sensor really does is listen for pre-detonation. Pre-Detonation/Knocking happens when the fuel ignites before the engine is ready for the fuel to be ignited. This happens to older vehicles (without knock sensors) what have carbon deposits...put them under a heavy load and it sounds like marbles in a can. This would also happen if you put 87 octane fuel in a vehicle that wanted higher octane fuel that also did not have a knock sensor. The knock sensor detects the pre-detonation and retards the timing so that the fuel ignites later and does not make the noise. The result is lower performance since the fuel is not ignited when it should be.

Likely what is happening, the sensor has gone bad and the computer is going to a default timing level as a precaution. That is likely resulting in lower performance. It isn't going to harm the engine. But it is likely that you'll get lower MPG.

 

Thanks ccernst. I appreciate the response. I figured that MPG might suffer a little. I was just getting a little worried because I had seen a few threads that some folks were reporting that their engine was running hot to the point of overheating because of the knock sensor. I could see in a perfect storm of problems where that MIGHT happen but there would have to be other issues besides just the sensor. I called another dealer here in the Twin Cities and I'm waiting for a call back. They might be able to squeeze me in before I head out of town on Friday

 

Most likely a wire got pinched or pin pulled out or something. I would check around the engine bay to see if any of your wire harnesses look damaged, especially around bends and tie downs.

 

Dealer said it looks like mice damage and will need to be replaced. Want to charge $650 and would need to order the part...FML!!!! I've never replaced one...any chance this is something I could do in the garage?

 

The mice chewed through the sensor? That doesn't sound right...they probably chewed through the wires..I bet you could run new ones if yourself if you were so inclined... Ask them to provide details on the damage...

 

Wire harnesses are all plug and play, i wouldn't recommend repairing the damaged harness yourself unless you have experience. Most people tend to use shady butt splices and the wiring will fail within months.

You should be able to buy the harness you need and install it very easily, as long as you know which harness.

 

Is it this harness?
https://www.oemmitsubishiparts.com/p...agramCallOut=1

 

If you can get it for a reasonable price I would say go for it... But is that what the stealer wants 600 bucks for?

One harness I needed was like $4k... If you fix it right it should last but I agree a low quality repair will result in failure.

 

Are you sure that mice chewed your harness??? Many times a poorly routed or tightened harness can chaff and fray, that's due to poor design and workmanship and should be covered under warranty. If it truly was mice, then no that's not covered under warranty.

You should take a look under the hood yourself, maybe snap a picture for us.