27
UnclassifiedCooling
What This Code Means
Engine Overcrank protection trip; Low oil pressure protection trip; High coolant temperature protection trip; ECU specific fault elements; Diagnostic reporting triggered; Reduced performance due to high altitude; Reduced performance due to high temperature; Reduced generator output; Performance degradation; Generator derating; Overcrank; Engine protection trip/alarm; Generator protection trip/alarm
Possible Causes
- •Explicitly stated as engine protection element
- •Monitored via J1939 communication
- •Operation above 3000 ft (914m) from sea level
- •Ambient temperature above 104 °F (40 °C)
- •Altitude above 3000 ft (914m)
- •Altitude above 3000 ft (914m) from sea level
- •Temperature above 104 °F (40 °C)
- •Engine failure to start
- •Low oil pressure
- •High coolant temperature
- •Voltage out of range
- •Frequency out of range
- •Reverse power flow
- •Loss of excitation
- •Overcurrent condition
Suggested Actions
- 1Derate generator 3% per 1000 ft (305m) above 3000 ft
- 2Derate generator 2% per 10 °F (5.6 °C) above 104 °F
- 3Derate generator 3% per 1000 ft (305m) above 3000 ft (914m) from sea level
- 4Derate generator 2% per 10 °F (5.6 °C) above 104 °F (40 °C)
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