Caterpillar C27/C32 Engine

How to read your Caterpillar engine serial & model number →

• The yellow fault alarm indicator (26) FLASHES when the GSC+ detects an alarm fault. g00634142
• The red fault shutdown indicator (25) FLASHES when the GSC+ detects a shutdown fault. Not specified in text
• Overcrank – The engine does not start within the setpoint for total cycle crank time that is programmed into the GSC+.
  Fix: Correct the fault and ensure the engine starts within the setpoint before attempting to start the engine.
• Low Oil Pressure – The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC+.
  Cause: The engine oil pressure drops below the setpoints for low oil pressure shutdown that are programmed into the GSC+.
  Fix: Correct the fault and ensure the engine oil pressure is above the setpoint before attempting to start the engine.
• High Water Temperature – The engine coolant temperature rises above the setpoint for high water temperature shutdown that is programmed into the GSC+.
  Fix: Correct the fault and ensure the engine coolant temperature is below the setpoint before attempting to start the engine.
• Engine Overspeed – The engine speed exceeds the setpoint for engine overspeed that is programmed into the GSC+.
  Fix: Correct the fault and ensure the engine speed is below the setpoint before attempting to start the engine.
• Emergency Stop – The operator presses the Emergency Stop Push Button (ESPB) on the front panel.
  Fix: Correct the condition and ensure the emergency stop is not activated before attempting to start the engine.
• The GSC+P FLASHES the fault alarm indicator and shows a corresponding fault code on the upper display. AL
  Fix: Correct the alarm fault.
• The GSC+P FLASHES the corresponding shutdown indicator. Low oil pressure, Emergency stop, High water temperature, Engine overspeed, Engine overcrank, Fault shutdown
• The display is showing 'i02882853' for OP2-2.
  Fix: Press the ‘SCROLL UP’ key or the ‘SCROLL DOWN’ key. The next setpoint value is showing. Repeat this step until all the desired setpoints and the setpoint values are viewed. Press ‘EXIT’ key twice to return to normal mode.
• An alarm fault is occurring. i02897975
  Cause: An alarm fault is not critical but an alarm fault is potentially serious. An alarm fault can be protective relaying functions that have been enabled as an alarm fault.
• 'PE FAIL' is briefly shown on the upper display.
  Cause: A mistake was made during the entry of the password.
  Fix: Press the 'SELECT' key to restart the process of entering the password.
• 'DIAG' indicator is shown on the upper display.
  Cause: There are active diagnostic faults in the fault log.
  Fix: Enter service mode, enter the password, and clear the faults by pressing and holding the 'ENTER' key for two seconds. Repeat until all faults are erased.

Compiled from service & troubleshooting documentation across every generator set that uses the Caterpillar C27/C32.

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Parts cataloged across all variants of this engine family — verify the exact part fits your specific variant and serial number before ordering.

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• Caterpillar MD6290 — Drilling Equipment

Other equipment known to use this engine, via filter-application cross-reference — useful for sourcing parts even when your exact machine isn't listed elsewhere on this page.