Kohler Generator Error Code 04: How to Fix It

Q: What does Kohler generator error code 04 mean?

Error code 04 indicates low coolant level in the generator's cooling system. It is a safety alert to prevent overheating.

Q: How do I reset error code 04 on my Kohler generator?

After refilling coolant to the proper level and fixing any leaks, the error typically clears automatically when the generator is restarted. If it persists, a professional may need to check the coolant level sensor.

Q: Can I use water instead of antifreeze in my Kohler generator?

No. Use a 50/50 mix of ethylene glycol antifreeze and distilled water. Water alone can freeze, boil, or cause corrosion. Always follow the owner's manual.

Q: How often should I check coolant on a Kohler generator?

Check coolant level at every scheduled maintenance interval (typically every 100-200 hours or 6 months) and before extended use. Regular inspections prevent unexpected shutdowns.

Q: What if my Kohler generator still shows error 04 after refilling?

The coolant level sensor may be faulty, or there might be a hidden leak. Also check if the radiator cap is sealing properly. If the issue persists, have a technician diagnose the system.

Abstract

Kohler generator error code 04 indicates low coolant level in the cooling system. This is a safety measure to prevent engine overheating. Refilling coolant and checking for leaks usually resolves the issue.