2008 Yamaha Rhino YXR70FX Factory Service Manual, Page 292Get this manual
FUEL INJECTION SYSTEM Fault code No42 Diagnostic code Nod07 Speed sensor 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 securely
Symptom No normal signals are received from the speed sensorReinstatement method Starting the engine, and activating the vehicle speed sensor by operating the vehicle at 20 to 30 kmh