"Engine Malfunction: reduced power!" & "Increased Emissions"

[OTDoc]

Just got these dreaded warnings this afternoon! the first one happened after I had been driving about 15 miles or so, nothing excessive. continued to my destination and left her alone for about 30 minutes and started her back up... everything seemed ok. I even stayed in P400 mode, then on the drive back home got both warnings!!??
and yes I did a search on the subject.... just wondering who has had similar experiences... and if there is any chance it will "self-correct"???

[NV M6]

Originally Posted by OTDoc

Just got these dreaded warnings this afternoon! the first one happened after I had been driving about 15 miles or so, nothing excessive. continued to my destination and left her alone for about 30 minutes and started her back up... everything seemed ok. I even stayed in P400 mode, then on the drive back home got both warnings!!??
and yes I did a search on the subject.... just wondering who has had similar experiences... and if there is any chance it will "self-correct"???

You should really take it to BMW ASAP. My 2007 M5 did the same thing and completely died on the freeway. BMW Germany was prepared to install a new engine, intake and header set. After refusing that deal, it worked out as I received an M6 for my trouble.

Believe it or not, the same engine malfunction warning light came on in the M6. The dealership put the car on the computer and it was simply a misfire. So to answer your question, in this instance, it "self-corrected". This hasn't happened again, so the M6 is in good shape.

Well good luck!

[TimK]

if it were just increased emissions warning and not reduced power with lower redline (limp mode) I wouldn't get worried about it. But with limp mode there are several possible sources and it's better to know what it is before assuming it's no big deal and waiting for it to clear itself. They should be able to tell you what is causing it readily by looking at the fault codes on OBDII. I say bring it in.

PS. NV M6's experience sure ran the gamut. One limp mode got him another car, the other meant nothing.

[MJTSUB]

This happened to me before. It turned out it was a bad O2 sensor.

[OTDoc]

i appreciate the input, taking it in to the dealer in the morning... got my fingers crossed. I'll keep everyone posted

[m6ontheway]

Good luck!!

[OTDoc]

good news!! (unless i was going to get a new one). The air filter was coming loose from the air mass meter... this was diagnosed over the phone by my Dinan dealer. Drove it home from the dealer without incident (about 20 miles- 10 miles on freeway). thanks for all the input. it truly is nice having this forum to post questions and concerns where people take the time to respond....thanks

[m6ontheway]

glad to hear it my friend!!

[snowball]

Originally Posted by OTDoc

good news!! (unless i was going to get a new one). The air filter was coming loose from the air mass meter... this was diagnosed over the phone by my Dinan dealer. Drove it home from the dealer without incident (about 20 miles- 10 miles on freeway). thanks for all the input. it truly is nice having this forum to post questions and concerns where people take the time to respond....thanks

I assume you have the Dinan cold air intakes? I had them installed. I have heard that the filters inside the airbox can come off (some of the first ones are doing this). It is good the car recognizes this letting us know, and we don't go around driving the car without the filter in place.

It does make one wonder about $2500 airboxes with falling off filters though....

[xraym5]

Originally Posted by snowball

I assume you have the Dinan cold air intakes? I had them installed. I have heard that the filters inside the airbox can come off (some of the first ones are doing this). It is good the car recognizes this letting us know, and we don't go around driving the car without the filter in place.

It does make one wonder about $2500 airboxes with falling off filters though....

Just had mine refitted as well.