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      07-26-2019, 06:41 AM   #18
dpaul
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Drives: 2009 E90 335xi, 2011 E93 M3
Join Date: Dec 2012
Location: Boston

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Quote:
Originally Posted by SnowRacer View Post
A miracle hath happened!

Finally got to do a half a dozen WOT runs after having the CCV/PCV valve heater replaced under the BMW recall.

No more smoke cloud, no more misfires, no more deluge of fault codes! Unbelievable.

I still do have the O2 heater control sensor 2 faults for both banks (P0036 and P0056), but it runs great. I'll replace those two post-cat O2 sensors soon and then it should be back to 100%.

Just to recap I had already replaced the valve cover which has a built in new CCV, also replaced the CCV hose which I found was perfectly fine after taking it off. Apparently the vent hose valve heater must have been clogged or otherwise dysfunctional enough to create chaos.

A big thank you to George (gbalthrop), dpaul, and Neil (neilj35) for your knowledge, willingness to help, deep troubleshooting abilities, and your wealth of suggestions!

Thanks again,
Gary
Great news!

I admit to thinking that it was very unlikely that the heater fault would plug that vent but clearly I was wrong about that.
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