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, above the flywheel gear. It sends a message to the ECU through a grey wire T55/49, then to https://g28carkeys42733.p2blogs.com/29437956/why-is-everyone-talking-about-audi-advanced-key-right-now