Mario01

Engine light problem and air mass error on BMW 3

Check engine light on

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)

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

(Translated from French)

CarlyMechanic

@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

Check the Mass Air Flow (MAF) sensor for dirt or contamination, as this can affect air mass readings. Cleaning the MAF sensor with a dedicated cleaner might resolve the issue. If the problem continues, please update us on the situation.

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Mario01

Engine light problem and air mass error on BMW 3

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