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Mario01

Engine light problem and air mass error on BMW 3

Hi all, I have a 2015 BMW 3 with 180,000 km and recently the check engine light came on. When scanning the vehicle, I got error code 290900, which indicates a problem with the air system: 'air flow to AGR air mass, plausibility: excessive measured air mass compared to calculated air mass'. Has anyone experienced this problem before? What solutions or recommendations could you offer me? Thanks in advance!

(Translated from Spanish)

Summary of the thread

A 2015 BMW 3 with 180,000 km has a check engine light on, showing error code 290900 related to the air system, indicating excessive measured air mass compared to calculated air mass. Possible causes include vacuum leaks in the intake system or a dirty Mass Air Flow (MAF) sensor. Suggested solutions involve checking for vacuum leaks and cleaning the MAF sensor with a dedicated cleaner.

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3 comment(s)

CarlyMechanic

Start by checking for any vacuum leaks in the intake system, as these can cause discrepancies in air mass readings. Inspect hoses and connections for any signs of wear or damage. Let us know if you find anything unusual or if the issue persists.

Olive

Hello,error code 290900 on my Bmw f30/330d,april 2014I reset but it comes back after about ten starts. Merci pour votre aide. olivierfrere1@gmail.com

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BMW

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3