BMW 2-Series Diesel Stalling: MAF Sensor Warning Signs

Hey there! I had nearly identical issues with my 2014 BMW 4 Series diesel last year. Same symptoms, poor acceleration, rough idle, stalling, and the check engine light. The mass airflow sensor was indeed the culprit. Had it diagnosed at the dealership, they confirmed the MAF sensor was defective and contaminated. The repair involved replacing the sensor and cleaning the air intake system. It wasn't a major repair, but it's crucial since the MAF sensor controls the air-fuel mixture. Running the car with a bad MAF sensor can damage other components if left unchecked. After the replacement, the engine ran like new again, smooth idle, proper acceleration, and normal fuel consumption. This is definitely something you want to get fixed soon to avoid further complications. My advice: go to a reputable BMW specialist who can properly diagnose and fix it. You'll need proper diagnostic equipment to confirm it's the MAF sensor.

This is exactly what I'm dealing with. Really helpful to know it was the MAF sensor in your case, sounds spot on with my symptoms. Was thinking about getting it checked this week actually. By the way, do you remember roughly how much you ended up paying for the fix? Also, has everything been running smoothly since, or did you run into any other issues? Just want to make sure I know what I might be in for. Thanks again for sharing your experience!

Hey again! Happy to give you an update! I just had it fixed last week, cost me 365 Euro for the new MAF sensor and labor. Definitely worth every penny because my 4 Series is running like a dream now. All those annoying issues, the jerky acceleration, rough idle, stalling, completely gone! Since getting the new mass airflow meter installed, the engine's been super smooth, fuel consumption is back to normal, and no more check engine light. It's like driving a different car! You know that feeling when everything just works right? That's where I'm at now. Haven't had a single problem since the repair. My mechanic did a thorough job cleaning the air intake system while they were at it, which probably helped too. If your symptoms are matching what I had, I'd say go for it, don't wait around like I did at first. Trust me, you'll notice the difference right away once it's fixed. Let me know how it goes if you get it done!

Got it fixed yesterday and what a difference! Found a good mechanic who diagnosed it straight away, yep, faulty MAF sensor just like yours. Paid about the same too, around 370 Euro all in. The transformation is incredible. No more jerking, stalling, or rough idle. Engine's purring like it should, and I can already tell the fuel consumption's better. Mechanic was great too, really knew his BMWs. Even showed me the old sensor and explained how it was affecting everything. Actually, my bill included a full air intake cleaning as well, so hopefully that'll help prevent any future issues. Can't believe I waited this long to get it sorted! Should've done it weeks ago when the problems first started. Thanks again for pushing me in the right direction. Saved me from wasting time with unnecessary repairs or making things worse. Really appreciate your help with this one! Take care!