Cummins

1847

UnclassifiedGeneral

What This Code Means

Engine Coolant Temperature High (Shutdown with Cooldown); Exhaust gas temperature sensor signal is out of range – shorted high

Possible Causes

  • •Fault Simulation Feature Is Enabled
  • •Inaccurate Coolant Temperature Sensor
  • •Threshold Setting Too Low

Suggested Actions

  1. 1Connect InPower.
  2. 2Recalibrate the engine base board to reset the threshold settings.
  3. 3Repair or replace faulty components or wiring.
  4. 4Use the service tool to connect to the base board and verify fault threshold settings for the sensor and compare to the specifications called out in the engine manual.
  5. 5Using a thermocouple or similar device, measure coolant temperature near sender and compare to coolant temperature displayed.
  6. 6Verify base board and PCC calibration number and revision is correct.
  7. 7Verify continuity from temperature sender wire pin to base board pin. Harness resistance should be less than 5 Ohms.
  8. 8Verify that the fault simulation is not enabled for the engine speed sensor by connecting to the PCC via InPower.
  9. 9Verify the temperature sender resistance and compare to specifications called out in the engine manual.

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