samuelschulze26

C3 high fuel consumption and stalling

I'm writing to seek advice regarding my 2015 Citroen C3 with a gasoline engine. I've noticed a significant increase in fuel consumption, and the engine has a tendency to stall, particularly when idling. The check engine light is illuminated, and there's also a noticeable amount of smoke emitting upon acceleration. After some initial diagnostics, I suspect the mass air flow meter (LMM) may be defective. Could this be the root cause of my problems, or should I be looking at other potential issues?

A 2015 Citroen C3 is experiencing high fuel consumption and stalling, with the check engine light on and smoke upon acceleration. The suspected cause is a defective mass air flow meter, which can disrupt the air-fuel ratio. It is advised to inspect the air intake system for blockages or leaks and consider professional diagnostics to confirm and resolve the issue.

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4 comment(s)

Hello there. I also drive a C3, and those symptoms do sound awfully familiar. If I remember correctly, I also had higher fuel consumption and my engine stalled sometimes. Have you checked the air intake system for any blockages or leaks? A faulty mass air flow sensor can definitely cause those problems by messing with the air-fuel ratio.

Thank you for your insights! I did a visual inspection of the air intake, but didn't notice anything obvious. How did you confirm that your mass air flow sensor was indeed the problem? Did you perform any specific tests, or did you rely solely on the symptoms?

In my case, I didn't perform any advanced tests myself. Given the symptoms and my limited experience, I opted to take it to a trusted workshop. They confirmed that the mass air flow sensor was faulty and replaced it. Based on your description, it might be best to do the same, rather than risk further damage by experimenting on your own.

I appreciate the advice! I think I will bring it to the workshop. I've just received the bill of 365€, the car runs perfectly now. Thanks again!

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CITROEN

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