19742 Error Code For Stihl Tractor Models

There are 118 kind of error description.

Description:

D3 Main Relay opens too early / too late - main relay shut off too early (before EEPROM update) - P0685 ECM/PCM Power Relay Control Circuit /Open

Main Relay opens too early / too late - main relay shut off too early (before EEPROM update) - P0685 ECM/PCM Power Relay Control Circuit /Open

Hissing noise at expansion valve, Loss of refrigerant.Restriction in refrigerant system.Check receiver-dryer for uniformity of temperature.