How to Replace an Audi G28 Engine Speed Sensor Charles the Humble Technician shows how to replace the G28 Engine Speed Sensor. The sensor is situated on the edge of the transmission, above the flywheel ring gear. It transmits a signal the ECU via a grey wire (T55/49) and then https://carlocksmiths28549.blogoxo.com/29973133/need-inspiration-try-looking-up-audi-a1-key