Bluetooth OBD-II scanner that pairs with phone apps tuned for motorcycles — reads OEM-specific trouble codes, clears the check-engine light without a shop visit, and streams live sensor data (RPM, throttle position, coolant temp, fuel trim) on a real-time dashboard. Works with Honda, Kawasaki, Yamaha, Suzuki, Triumph, Ducati, Harley and most OBD-II compliant bikes from 2008 onward. Battery-safe sleep mode so leaving it plugged in for weeks doesn't drain the bike. This is the scanner that pays for itself the first time it skips a $150 diagnostic fee at the dealer.