Internal ECU Fault

Integrity fault or software/hardware error in the Engine Control Unit (ECU).

Possible causes

Internal checksum error
Voltage spike affecting memory
Internal electronic component failure

Recommended actions

Disconnect battery for 10 minutes to reset
Attempt to re-flash ECU software
Replace ECU if error is permanent

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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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