D4 Too high UREA Temperature in Pump module or Leakage test failed (Emergency shut off) - urea leakage detection (static or dynamic) - P202D Dynamic urea leakage test - Leakage detected
Too high UREA Temperature in Pump module or Leakage test failed (Emergency shut off) - urealeakage detection (static or dynamic) - P202D Dynamic urea leakage test -Leakage detected
If Steering Not Working,Hydraulic suction filter plugged.Improper tire inflation.Steering linkage needs lubrication.Excessive play in steering. See your John Deere Dealer.