John Deere PE4045HFG92 Engine

Shared across brands: Generac, John Deere, Magnum

How to read your John Deere engine serial & model number →

• LOW OIL PRESSURE SHUTDOWN
  Cause: Oil pressure is less than 20 psi (138 kPa), engine has oil leaks, or oil pressure sender is faulty.
  Fix: Check the level of the engine oil with the dipstick. Visually inspect the engine for oil leaks. If the oil level is good, restart the unit and verify the loss of oil pressure. Check the oil pressure sender.
• LOW FUEL LEVEL SHUTDOWN
  Cause: Fuel level is low, fuel tank has leaks, or fuel level sender and wiring are damaged.
  Fix: Check the fuel level on the Home screen. Confirm that the generator is sitting level to ensure an accurate reading. Check for leaks in the fuel tank. If the fuel level is good and no leaks are found, check the fuel level sender and the connecting wiring for damage.
• LOW COOLANT LEVEL SHUTDOWN
  Cause: Coolant level in the radiator is low.
  Fix: Allow the engine to cool. Check the coolant level in the radiator.
• Engine shutdown
  Cause: Fuel tank running dry, oil pressure less than 20 psi, coolant level low, high coolant temperature
  Fix: Check fuel level and add if necessary; check for leaks; inspect engine for damage; check oil level and add if necessary; visually inspect engine for leaks; check coolant level and add if necessary; check radiator hoses, engine block, water pump for leaks; check oil to ensure no coolant mixed in; allow engine to cool before checking
• Low Oil Pressure
  Cause: Shutdown, Low oil level, Oil leaking from engine, Oil pressure sender
  Fix: Check oil level on dipstick. Add oil, if needed. Visually inspect the engine for leaks. Restart unit and verify loss of pressure. Shut down immediately if pressure does not reach 5 psi (34 kPa) within five seconds. See engine operator’s manual to identify corrective action.
• Low Fuel Level
  Cause: Shutdown, Low fuel level, Unit not level, Fuel tank leaking, Damaged fuel sender or wiring
  Fix: Check fuel level in LCD window of controller. Confirm that unit is sitting level to ensure an accurate reading. Check tank for leaks. Check for continuity between sender and engine controller.
• Low Coolant Level
  Cause: Shutdown, Low coolant level, Coolant hoses leaking, Engine block or water pump leaking
  Fix: Allow engine to cool, then check coolant level in radiator. Add coolant, if needed.
• HIGH COOLANT TEMPERATURE SHUTDOWN
  Cause: Coolant temperature is 230°F (110°C) or more
  Fix: Check coolant level in overflow jug, restart engine and read coolant temperature, add coolant if low

Compiled from service & troubleshooting documentation across every generator set that uses the John Deere PE4045HFG92.

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

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.