59

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

  1. 1Derate generator 3% per 1000 ft (305m) above 3000 ft
  2. 2Derate generator 2% per 10 °F (5.6 °C) above 104 °F
  3. 3Derate generator 3% per 1000 ft (305m) above 3000 ft (914m) from sea level
  4. 4Derate generator 2% per 10 °F (5.6 °C) above 104 °F (40 °C)

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