Cummins

144

UnclassifiedCooling

What This Code Means

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

  • •Increase in load
  • •Higher ambient temperature
  • •Coolant leakage
  • •Low coolant level
  • •Obstructions to cooling airflow
  • •Loose or damaged fan belt
  • •Faulty blower fan or circulation pumps on remote radiator installations

Suggested Actions

  1. 1Review fault code 151 correction list for other possible causes.
  2. 2Allow the engine to cool down completely before proceeding with checks.
  3. 3Look for possible coolant leakage points and repair if necessary.
  4. 4Check the coolant level and replenish if low.
  5. 5Check for obstructions to cooling airflow and correct as necessary.
  6. 6Check the fan belt and repair or tighten if necessary.
  7. 7Check the blower fan and circulation pumps on remote radiator installations.

Related Cummins Fault Codes

1451461431514155319621971235
Browse all Cummins fault codes

ASK RUDY ABOUT THIS FAULT

Get a diagnosis walkthrough for 144 on your specific Cummins unit — cited to the OEM manual, not a forum guess.

TRY IT FREE