HOW TO: Audi B5 S4 Oxygen (O2) Sensor Change / Removal & Replacement

HOW TO: Audi B5 S4 Oxygen (O2) Sensor Change / Removal & Replacement

I had a CEL (check engine light) come on and used my VAG-COM from RossTech to figure out that my Driver Side Pre-Cat O2 sensor was shot. In this video I show…

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