C4.4 and C6.6 Industrial Engines and Engines for Caterpillar Built Machines Caterpillar


CID 0100 FMI 04

Usage:

C4.4 444
Conditions Which Generate This Code:

The Electronic Control Module (ECM) detects the following conditions:

  • The signal voltage from the engine oil pressure sensor is less than 0.1 Volts DC for more than eight seconds.

  • The ECM has been powered for at least two seconds.

  • The engine is running.

System Response:

The ECM will log the diagnostic code. If equipped, the warning lamp will come on. The ECM will set data for engine oil pressure to the default value. The electronic service tool will display "Voltage Below Normal" on the status screens.

None

This diagnostic code can be caused by a short to ground or a shorted sensor.

Test Step 1. Perform the following diagnostic procedure: Engine Pressure Sensor Open or Short Circuit - Test

Results:

  • OK - STOP

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