How to Replace an Audi G28 Engine Speed Sensor Charles the Humble Technician shows how to replace the G28 Engine Speed Sensor. This sensor is situated at the edge of transmission over the flywheel gear. It sends a signal to the ECU via an uncolored wire (T55/49) and then to https://g28carkeysolutions74480.anchor-blog.com/10449918/why-you-should-be-working-with-this-audi-a1-key