replace knock sensors?
Thread Starter
Junior Member
Joined: Jun 2015
Posts: 56
Likes: 1
From: Oregon
06 E55
replace knock sensors?
I am in the process of replacing the intake manifold and I am wondering if I should replace the knock sensors while I'm at it. Are they a common thing to go bad? Anything I should do while I have the intake off? There was some oil in the valley, what causes this? Thank you for the help. -Josh
MBWorld Fanatic!
Joined: Aug 2011
Posts: 3,184
Likes: 16
From: Highlands Ranch, Colorado
2014 BMW M235i
What car do you have first off? And I haven't really heard of the knock sensors going bad on the M272/M273. Don't think they do either on the M113k if it's an E55 that you have. Have you done air filters while the intake is off? Lol
Super Member
Joined: Sep 2013
Posts: 865
Likes: 61
From: Bay Area
14 550 sedan
Knock sensors should rarely ever go bad. No need to replace it. I've had a knock sensor code pop up once in conjunction with a bad ignition coil, replaced coil and knock sensor code never came back.
MBWorld Fanatic!
Joined: Aug 2011
Posts: 3,184
Likes: 16
From: Highlands Ranch, Colorado
2014 BMW M235i
^Same, knock sensor codes have all been related to failing coils for me. $59 at Advanced and 15 minutes of work later it will be resolved.
So, if you have some extra cash, and you have a high mileage car, I would consider doing ignition coils actually
So, if you have some extra cash, and you have a high mileage car, I would consider doing ignition coils actually
