I changed my mode to Sport mode and pressed on the gas quite a bit. It felt like something gave way and now I have 2 CEL P115D and P115C

The car hesitates between 2000 and 3000 RPM and there does not seem to be much throttle or boost. If you press on the gas after a while it seems like there is some load on the engine and it lowers RPM/decelerates (not sure how to explain)

I did some research and it seems MAF related. Can anyone help me how to resolve this. I have a long trip planned next weekend and really hoping to get this done myself instead of the 'stealer'

thank you for all your help.

This is very similar to my issue
https://www.northamericanmotoring.co...ml#post3459372

MINI DTC P115D (0x2774, 0x2B55, 0x2B57, or 0x2B5B) - Mass Air Volume (MAF) Flow 'A' Too Hgh

https://www.northamericanmotoring.co...uestion-2.html

MINI DTC P115C (0x2775) - Mass Air Volume Flow 'A' Too Low

 

Both threads you referenced had different outcomes.
It could be, but highly doubt, it's the MAF sensor itself... more like a subsequent issue that's mimicking a MAF issue.

Check the intake system for leaks, check the valve cover for cracks / leakage, and data-log your fuel trim and mass air flow reading to confirm.

- Erik

 

Ya might have to clean the MAF sensor. I've read a few on here that have done that so you might want to check out some other threads about it. Good luck!

 

These are air system related codes. Probably a leak somewhere. Make all the boost tubes from the turbo intake to the throttle body are tight. Don't forget to check the tubes on the intercooler. You'll also get this code if you have a vent to atmosphere blow off valve.

 

I removed the noisemaker. Could that be it?

 

I actually dont have the WMW BOV. Need to remove that from sign!

 

I cleaned the MAF sensor but that did not fix it :( The car runs sluggish I can actually feel it.

 

The PCV vent hose has a crack and is lose at cylinder head. Could this be causing the P115C & P115D error codes?

 

Definitely possible, as an open PCV system does allow unmetered air to enter the engine.

- Erik

 

put a clamp over the loose hose. Gonna wait and see for next few weeks, if CEL comes back again.

 

I have this exact issue, tried a new MAF with no luck - what was your resolution?

EDIT - Found the problem- loose turbo hose at intercooler, passenger side.

 

Hey guys! I just got the same problem yesterday after pick my car up from dealer workshop (they changed the alternator and battery at 23k milles) The car was running normally and the the turbo stop kicking in O.o!
I drove it back to the dealer workshop, and when I started the car it starts to feel clumsy like if it was going to turn off, and then the CEL shows in yellow color, but after a few minutes driving the car feels smooth again but without the boost. So I will wait till the technician calls and let me know the problem.
I'm praying to it is only a loose hose