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Check Engine Light On on 2002 Volkswagen Passat

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Hello,

My husband ran a scan, & changed out both O2 sensors & MAFS, the check engine light is still going on. What is the problem. I am so ready to sell this car, I got it used from my mom after she passed away, & I only have 3,700 miles on the car. Please help.
(2) Answers
Why you husband changed those parts? What were the codes when he ran the scan?
I'm sure we can help , you just have to patient and go code by code , so please give us a try at www.jmgrepair.com