[HELP] BMW M235i - CEL

akrobert9072 · 07-31-2024, 11:57 AM

Hello guys I have a 2015 BMW M235i F22 with the 3.0l N55. I am looking for some help diagnosing this fault code I have currently.

I have a CEL on for a code 101F01, I have a rough idle on startup and the car sucks down the gas like crazy and has a major performance drop. It almost feels like there is some sort of vacuum/boost leak.

So far, I have done the following steps to try and diagnose/fix this issue:

- Brand new PCV, Valve Cover, Valvetronic System, CTS Turbo Intake
- Smoke tested my Charge Pipe and intake system and found no leaks.
- Smoke tested the crankcase and also found no leaks.
- I tried the 15m adaptation reset where you unplug the pressure sensor and leave the car on for 15 mins

I have been fighting with this car to find the problem. Any help is greatly appreciated.

Coupsoup · 08-29-2024, 09:20 PM

Quick search brought up this thread

https://x3.xbimmers.com/forums/showthread.php?t=1991173

basically the MAF readings are not as expected. This can mean the exhaust is plugged, the MAF is bad or there is an air leak.

Do you have a scanner that can graph data by chance?

07-31-2024, 11:57 AM	#1
akrobert9072 New Member 0 Rep 5 Posts Drives: 2015 BMW M235i Join Date: Mar 2024 Location: North Carolina iTrader: (0)	[HELP] BMW M235i - CEL - 101F01 Hello guys I have a 2015 BMW M235i F22 with the 3.0l N55. I am looking for some help diagnosing this fault code I have currently. I have a CEL on for a code 101F01, I have a rough idle on startup and the car sucks down the gas like crazy and has a major performance drop. It almost feels like there is some sort of vacuum/boost leak. So far, I have done the following steps to try and diagnose/fix this issue: - Brand new PCV, Valve Cover, Valvetronic System, CTS Turbo Intake - Smoke tested my Charge Pipe and intake system and found no leaks. - Smoke tested the crankcase and also found no leaks. - I tried the 15m adaptation reset where you unplug the pressure sensor and leave the car on for 15 mins I have been fighting with this car to find the problem. Any help is greatly appreciated.
	Appreciate 0 Tweet Quote

08-29-2024, 09:20 PM	#2
Coupsoup New Member 3 Rep 27 Posts Drives: 2014 M235i Join Date: Aug 2024 Location: Washington iTrader: (0)	Quick search brought up this thread https://x3.xbimmers.com/forums/showthread.php?t=1991173 basically the MAF readings are not as expected. This can mean the exhaust is plugged, the MAF is bad or there is an air leak. Do you have a scanner that can graph data by chance?
	Appreciate 0 Quote