What is eng code on a thermo king tri-pac apu?

The ENG code on a Thermo King Tri-Pac APU (Auxiliary Power Unit) indicates an engine-related issue or fault. It typically appears as a diagnostic trouble code that helps identify problems with the APU's engine functions, such as fuel delivery, ignition, or other critical systems. To accurately diagnose the issue, it's recommended to consult the unit's service manual or a certified technician who can interpret the specific ENG code displayed.