Cummins

151

UnclassifiedCooling

What This Code Means

Engine coolant temperature has exceeded the alarm (shutdown) threshold; Engine Coolant Temperature High (Shutdown); Engine shutdown; Engine Coolant Temperature High (Warning); Engine has begun to overheat; Engine coolant temperature has risen to an unacceptable level; Engine is operating near cooling system capacity; Engine has overheated; Coolant temperature has risen above the shutdown trip point; Coolant level is low; Intake manifold temperature has risen above the shutdown trip point; Engine coolant level has fallen below the trip point; Derate lamp active; High Intake Manf 1 temp message displayed; Engine hot shutdown has occurred; Cooldown timers were bypassed; Warning lamp active; Engine Hot Shut Down message displayed; Communication between the engine control (ECM) and the PowerCommand 3.3 control has been severed; Shutdown lamp active; CAN Data Link Failure message displayed; Control is in Battle Short mode; Battle Short Active message displayed; Triggered configurable custome

Possible Causes

  • •High ambient temperature
  • •Coolant level is below specification
  • •Cooling system components are damaged or obstructed
  • •Enclosure air intake blocked
  • •Coolant level below specification
  • •Blocked radiator
  • •Blocked enclosure air discharge
  • •Damaged fan shroud or air recirculation baffles
  • •Broken or loose fan belt
  • •Damaged, worn, or improperly tensioned fan belt(s), pulleys, or belt tensioner
  • •Damaged radiator cap and gasket or improper pressure operation
  • •Collapsed, distorted, or leaking upper and lower radiator hoses
  • •External contaminants on cooling system components
  • •Contaminated coolant and scale
  • •Increase in load
  • •Higher ambient temperature
  • •Coolant leakage
  • •Low coolant level
  • •Obstructions to cooling airflow
  • •Loose or damaged fan belt

Suggested Actions

  1. 1Reduce loads or recirculation of discharge air to generator in elevated ambient.
  2. 2Inspect the engine, cooling system, and surrounding area for external coolant leaks. Contact your local dealer if a leak is present.
  3. 3Verify the coolant level is correct via the sight glass. Add coolant as necessary.
  4. 4Inspect radiator, charge air cooler, and other cores for damaged fins, dirt, debris, or obstructions, and remove blockages.
  5. 5Inspect fan shroud and air recirculation baffles for damage and clearance. Contact your local dealer if repair or replacement is required.
  6. 6Inspect fan belt(s) for damage, wear, and proper tension. Inspect pulleys and belt tensioner for damage or wear. Contact your local dealer if repair or replacement is required.
  7. 7Inspect radiator cap and gasket for damage and proper pressure operation. Contact your local dealer if repair or replacement is required.
  8. 8Inspect upper and lower radiator hoses for collapse, distortion, or fluid leaks. Contact your local dealer if repair or replacement is required.
  9. 9Inspect cooling system components for internal contaminates (dirt, scale, or sludge) by opening the radiator cap and inspecting for contaminated coolant and scale. Clean as required, and contact your local dealer if flushing of the cooling system is required.
  10. 10Inspect the engine, cooling system, and surrounding area for external coolant leaks. Contact local dealer if a leak is present.
  11. 11Verify the coolant level is correct via the sight glass and add coolant as necessary.
  12. 12Inspect fan shroud and air recirculation baffles for damage and clearance. Contact local dealer if repair or replacement is required.
  13. 13Inspect fan belt(s), pulleys, and belt tensioner for damage, wear, and proper tension. Contact local dealer if repair or replacement is required.
  14. 14Inspect radiator cap and gasket for damage and proper pressure operation. Contact local dealer if repair or replacement is required.
  15. 15Inspect upper and lower radiator hoses for collapse, distortion, or fluid leaks. Contact local dealer if repair or replacement is required.
  16. 16Inspect cooling system components internally for contaminants (dirt, scale, or sludge) by opening the radiator cap, and contact local dealer if flushing is required.
  17. 17Reduce loads or recirculation of discharge air to generator set.
  18. 18Inspect enclosure air discharge for dirt, debris, or obstructions and remove blockage or snow/ice buildup if applicable.
  19. 19Check coolant level and add coolant if applicable.
  20. 20Inspect radiator for dirt, debris, or obstruction and remove blockage.

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