19020 Error Code For Sears Tractor Models

There are 9 kind of error description.

Description:

16 Temperature sensor before catalyst (electrical) - signal low - P0427 Catalyst Temperature Sensor - Circuit Low

Temperature sensor before catalyst (electrical) - signal low - P0427 Catalyst Temperature Sensor Circuit Low

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