Quote:
Originally Posted by Theodore
For anyone who searches these error codes on M3post, I had both of these codes at the same time. I replaced the air pump suction hose (with included sensor) BMW part #11727838504 and both codes have gone away permanently. BMW doesn't sell the sensor separately, but it is available with aftermarket brands if you think it is the sensor and find no damage/cracks in the hose. Careful about buying this part used. I did that at first on Ebay, but the item was poorly packaged (maybe damaged when shipped in a soft sided envelope) and didn't work (or maybe it was already defective before shipping). I would recommend purchasing this part new.
Link to website I borrowed the image from:
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Hi, did you have any rough running before you changed the hose?
I've got the codes, but don't want to replace unless likely to fix the hesitation I'm having when hot at very low revs when accelerating.
Cheers, Steve