Check Glow Plugs or Intake Air Heater

Failure detected in the intake air heater or glow plug circuit.

Possible causes

Burned-out glow plugs
Defective glow plug relay
Blown fuse or fusible link

Recommended actions

Measure continuity in each glow plug
Verify voltage at the preheat solenoid
Check glow plug power fuse condition

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Other Thermo King codes

00No Alarms Exist 02Check Evaporator Coil Sensor (Zone)03Check (Control) Return Air Sensor (Zone)04Check (Control) Discharge Air Sensor (Zone)05Check Ambient Temp Sensor 06Check Coolant Temp Sensor

View all Thermo King codes

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