Controller shows E017 Oil Temperature High, generator shuts down under load

Safety first: Allow the engine to cool before touching oil lines or cooler surfaces. Hot oil can cause burns.

• Check oil level: Verify correct oil level on the dipstick and top up if needed.
• Inspect oil cooler: Locate the oil cooler (air‑to‑oil or coolant‑to‑oil). Clean external fins and ensure coolant hoses are not kinked or blocked.
• Verify coolant system: Since many oil coolers are coolant‑fed, ensure the engine cooling system is functioning properly (radiator clean, pump working).
• Test oil temperature sensor: Inspect wiring and connector. Compare sensor readings on the controller to an external temperature measurement if possible. Replace the sensor if readings are clearly incorrect.

If high oil temperature persists under normal load and ambient conditions, internal engine issues may be present and require professional service.