143
UnclassifiedCooling
What This Code Means
Engine oil pressure is below the low oil pressure shutdown threshold; Engine coolant temperature has exceeded the alarm (warning) threshold for high coolant temperature; 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
Possible Causes
- •Coolant leakage
- •Coolant level is below specification
- •Cooling system components are damaged or obstructed
- •External leak
- •Faulty blower fan or circulation pumps on remote radiator installations
- •High ambient temperature
- •Higher ambient temperature
- •Increase in load
- •Loose or damaged fan belt
- •Low coolant level
- •Low lubricating oil level
- •Obstructions to cooling airflow
Suggested Actions
- 1Add coolant as necessary.
- 2Allow the engine to cool down completely before proceeding with checks.
- 3Check for obstructions to cooling airflow and correct as necessary.
- 4Check the blower fan and circulation pumps on remote radiator installations.
- 5Check the coolant level and replenish if low.
- 6Check the fan belt and repair or tighten if necessary.
- 7Check the oil level. Add or drain oil, if necessary.
- 8Contact your local dealer if a leak is present.
- 9Inspect the engine and surrounding area for external oil leaks.
- 10Inspect the engine, cooling system, and surrounding area for external coolant leaks.
- 11Look for possible coolant leakage points and repair if necessary.
- 12Reduce loads or recirculation of discharge air to generator in elevated ambient.
- 13Review fault code 151 correction list for other possible causes.
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