How to Replace an Audi G28 Engine Speed Sensor Charles the Humble Technician shows you how to replace the G28 Engine Speed Sensor. The sensor is located at the edge of transmission just above the flywheel gear. It transmits a signal to the ECU via the grey wire (T55/49), then https://g2851229.total-blog.com/5-audi-advanced-key-lessons-learned-from-professionals-55318810