Be prepared when you visit your dealer for service. Diagnostic code scanner easily retrieves trouble codes from your vehicle's computer to diagnose problems. The pocket-sized diagnostic code reader simply plugs into your bike's vehicle port, and automatically connects to the onboard computer. It reads the Diagnostic Trouble Codes (DTC) and displays the DTC description on a bright LCD screen. The Code Reader Master allows you to clear codes with the touch of a button, and also lets you to double check the current calibration ID for your motorcycle. The Code Reader is powered by your bike when connected. Kit includes palm-sized reader, J1850 connection cord, and instructions.