Reverse clutch solenoid coil or its wiring shorted to power
Aux 1st Lower Coil solenoid shorted to 12 volts.
Boost Pressure Sensor voltage is too low (engine controller pin A45)
Reverse clutch solenoid coil or its wiring shorted to power
If Steering Not Working,Hydraulic suction filter plugged.Improper tire inflation.Steering linkage needs lubrication.Excessive play in steering. See your John Deere Dealer.