2006-2009 Yamaha YFM700RV Raptor 700RV factory service manual, Page 265Get this manual
FUEL INJECTION SYSTEM Fault code No42
Symptom ANo normal signals are received from the speed sensorBOpen circuit is detected in the neutral switchD07 Speed sensor D21 Neutral switch Check or maintenance job Check the coupler for any pins that may be pulled out Check the locking condition of the coupler If there is malfunction, repair it and connect the coupler securelyReinstatement method Starting the engine, and activating the vehicle speed sensor by operating the vehicle at 20 to 30 kmh
Diagnostic code NoA B
Order Itemcomponents and probable cause A-1 Connections Speed sensor coupler Main wire harness ECU coupler