How to Replace an Audi G28 Engine Speed Sensor Charles the Humble Technician shows you how to replace the G28 Engine Speed Sensor. This sensor is located on the edge of the transmission above the flywheel ring gear. It sends a message to the ECU through the grey wire T55/49 https://auto-locksmiths10548.dreamyblogs.com/30174615/seven-reasons-why-audi-a1-key-is-important