Hello,

I have an 03 R53 that's throwing codes p0326 knock sensor 1. The other code went away.. I haven't noticed anything different when driving. It's also throwing a code for Evap leak p0456. I am thinking the evap is just the gas cap. Any one have these codes before? If so what was the culprit?
Thanks!

 

I can't remember the specific code that my car had, but I did get a code for an evap leak a few years ago and was able to fix it with a $20 gas cap, so I think that's a good place to start for that code. The knock sensor has probably gone bad, it's not super urgent to fix, but I would fix it sooner rather than later. The sensor doesn't look hard to replace, but it does look buried under alot of components. https://www.pelicanparts.com/techart...eplacement.htm

 

That's what I was thinking with the gas cap. The car would pass inspection and safety with both of these issues I'd hope.