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2002 996 air mass sensor and ABS/PSM faults

Brakes

Vehicle Information: Year: 2002; Body Type: Cabriolet; Total Mileage: 16000 miles;

I understand that there have been reports of air mass sensor failures (fault code "5525") leading to anti-lock braking system (ABS) and Porsche stability management (PSM) failures.The on board computer screen may read "ABS failure - Drive to workshop" or "PSM failure - Drive to workshop".What is the relationship between the air mass sensor and the ABS/PSM systems? How does a faulty air mass sensor create a fault/failure in the ABS/PSM systems?Thanks for your time and knowledge.

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