Illegal Engine Operating State

The controller has detected that the engine is in a non-logical or illegal operating state.

Possible causes

Software logic error
Conflict between speed sensor signals
Start attempt while engine is already rotating
Internal ECU failure

Recommended actions

Perform a full system reset (Battery Disconnect)
Verify coherence of all engine sensors
Update unit and ECU software
Review event history to check previous sequence

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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

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