F5C Engine Regulated 5 Volt Sensor Supply # 1 - Too High. (A = 60pin Connector - Engine A07 A08 A09 A10 A11 A12 A13) Amber
If Steering Not Working,Hydraulic suction filter plugged.Improper tire inflation.Steering linkage needs lubrication.Excessive play in steering. See your John Deere Dealer.