How to Replace an Audi G28 Engine Speed Sensor Charles the Humble Technician teaches how to replace the G28 Engine Speed Sensor. The sensor is located at the edge of transmission just above the flywheel gear. It sends a message to the ECU through an uncolored wire T55/49, then to https://g28carkeys14973.blogoscience.com/35939377/5-lessons-you-can-learn-from-audi-a1-key