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Hi I have a 2013 beetle and its throwing a b12251b code for the passenger mat sensor high resistance. I've had the mat sensor replaced was wondering if anyone has run into this problem.
 

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What scan tool are you using? Have you confirmed the maf readings are in spec with with live data from a scan tool?

http://www.ross-tech.net/vag-com/advertising/DiagnosingA_MAF_TechTip.pdf

Can you double check the trouble code; that code doesn't seem like a typical obd or factory vw code.

Replacement maf sensors, should be Bosch; for them to work correctly, stay away from cheap aftermarket parts.

Give us more info and we can go from there. Thanks.
 
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