83 UREA Temperature too low during commissioning - P20B0 Reagent - temperature sensor of dosing module - Not plausible
UREA Temperature too low during commissioning - Temperatures not plausible during commissioning.
If Steering Not Working,Hydraulic suction filter plugged.Improper tire inflation.Steering linkage needs lubrication.Excessive play in steering. See your John Deere Dealer.