2007-2008 Yamaha YFM700 Grizzly Factory Service Manual, Page 473Get this manual
EPS (ELECTRIC POWER STEERING) SYSTEM Fault code No54
Symptom Relay contacts in the EPS control unit are welded togetherCheck or maintenance job Replace the EPS control unitReinstatement method Turning the main switch to "OFF"
Order Itemcomponents and probable cause Malfunction in EPS control unit