1300
Generac · Guardian 22kW 22,000 Watt 200 Amp Standby Generator with Mobile Link WiFi Monitoring
Oil pressure switch detected low oil pressure — check oil level and add if low; inspect for oil leaks around valve cover, oil pan, and drain plug; if oil level is adequate, oil pressure switch may be faulty; replace oil per maintenance schedule
Error 1300 on the Generac Guardian 22kW 22,000 Watt 200 Amp Standby Generator with Mobile Link WiFi Monitoring means: Low Oil Pressure. The top-ranked community fix is “Replace Oil Pressure Switch and Perform Full Oil Change” (medium difficulty, ~60 min, DIY cost: $20-$30). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · standby generator
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many standby generator repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $130-$180.
The Generac Guardian 22kW 22,000 Watt 200 Amp Standby Generator with Mobile Link WiFi Monitoring has 8 other known error codes:
Error code 1300 also appears on 2 other Generac models:
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