D4 Too high UREA Temperature in Pump module or Leakage test failed (Emergency shut off) - over temperature detection (urea temp. in pump module) - P2043 Reagent - temperature sensor of pump module - Out of range
Too high UREA Temperature in Pump module or Leakage test failed (Emergency shut off) - over temperature detection (urea temp. in pump module) - P2043 Reagent -temperature sensor of pump module -Out of range
Hissing noise at expansion valve, Loss of refrigerant.Restriction in refrigerant system.Check receiver-dryer for uniformity of temperature.