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linamoon1

Elgrand fuel consumption stalling and smoke

My 2014 Nissan Elgrand with a gasoline engine is suddenly drinking fuel. It stalls at idle, the check engine light is on, and it smokes on acceleration. I suspect the mass air flow meter is causing an air-fuel ratio problem. Has anyone seen these symptoms?

Summary of the thread

A 2014 Nissan Elgrand is experiencing high fuel consumption, stalling at idle, a check engine light, and smoke during acceleration. The suspected cause is a faulty mass air flow sensor affecting the air-fuel ratio. After consulting with others who had similar issues, it was confirmed by a workshop that the mass air flow sensor was indeed defective and needed replacement.

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4 comment(s)

isabellahimmel41

Those symptoms sound familiar! My old 2012 Volvo XC60 had similar issues. Higher fuel consumption was the first sign, then the check engine light came on a week later. I didn't notice any smoke, though. Did you check the air intake for any obstructions? Also, what codes is the check engine light throwing?

linamoon1 (community.author)

Thanks for the quick reply! I did a quick visual check of the air intake, but didn't see anything obvious blocking it. I don't have an OBD2 scanner myself, so I don't know the exact codes. Do you think the mass air flow sensor is the likely culprit in my case?

isabellahimmel41

Well, in my case with the Volvo, it turned out to be a defective mass air flow sensor. The garage diagnosed it pretty quickly once they hooked it up to the computer. Considering your symptoms and the stall, I'd say it's highly probable. Get it to a workshop!

linamoon1 (community.author)

It was the mass air flow sensor! The workshop confirmed it was defective and replaced it. Total cost: 365€. Thanks for the support, it nudged me in the right direction!

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NISSAN

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ELGRAND