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neuroclast neuroclast is offline
Junior Member
Posts: 101
Join Date: Nov 2015
Car: BMW 335i
Default 09-14-2017, 08:30 AM

It's annoying that I have to keep posting for help instead of cool advancements, but that's the stage I'm at right now.

Does anyone have experience with knock sensor codes on the S63? I'm getting "Knock Sensor 3" code constantly right now. Doesn't matter if JB4 is off or on, or on what map. It started after the JB was installed for a few days, so my first troubleshooting step is removing the JB and seeing if it goes away.

It will come on almost as soon as the car starts, and comes back right after clearing. At this point I'm thinking it's probably a bad sensor, but I can't find much info as these apparently don't go bad often.

I'm thinking if it was a bad coil/injector/plug, I would be getting misfire codes, not knock sensor codes.

Any tips from someone with a similar issue would be appreciated.
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