Mario01
Engine light problem and air mass error on BMW 3
(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)
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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CarlyMechanic
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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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BMW
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3
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.