E028
Perkins
Low Oil Pressure Warning
Controller displays E028 and indicates oil pressure low (warning only, not shutdown)
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Oil level slightly low, Worn engine bearings, Partially blocked oil filter, Faulty oil pressure sensor
How to Fix / Troubleshooting
Safety: Treat low oil pressure warnings seriously. Prolonged operation can damage the engine.
- Top up oil: Check and correct oil level to the upper mark on the dipstick.
- Replace oil filter: Fit a new Perkins‑approved oil filter and refill with fresh oil if service interval is due.
- Verify with mechanical gauge: Install a temporary mechanical gauge to confirm actual pressure at idle and rated speed.
- Sensor replacement: If mechanical pressure is normal but the warning persists, replace the oil pressure sensor.
- Engine inspection: If mechanical pressure is genuinely low, arrange for professional inspection of bearings and oil pump.
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Repair Difficulty
Medium
3/5
Required Part
Oil Pressure Sensor
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