O2 Sensor Problems of Volkswagen Atlas

Purchased vehicle in December 2017. In July, the check engine light came on. Fast forward to November and I am still having issues with the vehicle, and it seems that anytime the dealership fixes one issue, another appears. After having my vehicle at the dealership 4 times between July 25th and August 7th, it was finally discovered that I had a bad catalytic converter. After the catalytic converter was finally replaced in September, the check engine light came on again and this time I was told it was a bad oxygen sensor. After that was finally replaced, another error light came on that was identified as something else, and I had to wait for a new part to come in. After waiting several weeks, that part came in, repairs were completed, and another issue came up. My car has now been at the dealership for 21 days straight (this time), and I still have not received an eta on when it should be fixed. Problems have mostly been associated with check engine light and front assist (collision detection system) sensors, but now the issues have expanded to most of the car's internal computer system in general. Vehicle was in a wreck in may 2018 when another driver pulled out in front of me. Front assist errors are being attributed by dealer to the wreck, but the check engine and other computer errors, including issues with abs control module (latest problem) are not and are being covered under warranty.

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