My E60 M5 Threw It's First Check Engine Light

This Automotive Habit Of MineThis Automotive Habit Of MineMy favorite car is my next car. What will today bring to my automotive habit? There could be financial ruin, excellent deals, skinned knuckles, and epic mechanical resurrections. We can't save them all, but the cars that land in our driveway deserve a good ol' college try.

That’s right kiddos. The sky is falling. I’ve owned it for a few short months! I should run while I can. Anyone want to buy a M5? It is in great condition... kinda?! The horror! I can’t believe it’s happened?! It can’t be that bad... can it?!

Also says on the entertainment screen ‘increased emissions’. No change in power was observed.

It isn’t. It isn’t bad at all. In fact the prior owner told me this code occured two years ago. The thought is that it is either a failing MAF (right bank) or it is receiving an improper signal being it is downstream from the aftermarket Eventuri intakes. Either way, I am not worried at all.

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I should replace this scanner at some point. It’s finicky and doesn’t do everything I wish it would.

P00AB - right bank MAF. Seeing as a new MAF is just over $100, I won’t cry too hard. I erased the code to see if/when it comes back. Other thought was to swap MAFs from side to side to see if it is actually a bad sensor or if it receives an erroneous signal from that side of the intake.

The M5 is still reliable! Of course I’ve only put about 150 miles on it so far...

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Car seats do fit in the back too. #dadmobile

To compound the issue... at the same time I diagnosed the BMW, I realized I had no water. If the M5 threw a CEL... my house went into limp mode. Son of a B! Had to get muddy and fix the main line to my house. Thought it was worse than it was, apparently the glue holding on a joint was no good - line popped out of a 90 degree elbow. The holding tank ended up having a leak too! But again, no worries, it just needs some silicone!

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