121 Error Code For Leyland Tractor Models

There are 765 kind of error description.

Description:

Temperature select pot open/shorted to power

Engine Position Sensor (8.3, 9 Liter) or Crankshaft Sensor (15 Liter) is failed

Mid range clutch solenoid coil or its wiring shorted to power

Temperature select pot open/shorted to power

Engine Position Sensor signal is failed (no signal at engine controller pin A9)

Mid range clutch solenoid coil or its wiring shorted to power

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