Kohler Generator Error Code 06: How to Fix It
Medium 1-2 hours Medium Severity
Verified June 2026
- Error Code
- 06
- Brand
- Kohler
- Product Type
- generator
- Severity
- Medium
- DIY Difficulty
- Medium
- Estimated Fix Time
- 1-2 hours
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Tools You'll Need
- Multimeter
- Fuel container
- Air filter cleaner or replacement
- Wrench set
- Spark plug socket
- Screwdrivers
How to Fix Error Code 06
-
Turn Off the Generator and Disconnect Load
Always turn off the generator and let it cool before performing any maintenance. Never operate a generator inside your home. -
Check Fuel Supply and Quality
-
Inspect Air Filter
-
Check Governor and Throttle Linkage
Be careful not to over-adjust the governor; improper adjustment can cause engine damage. -
Test the Control Module
Disconnect the battery before testing electrical components to avoid shock or short circuits. -
Check for Carbon Buildup or Mechanical Binding
Ensure the ignition is off and the spark plug wires are disconnected before turning the flywheel.
Parts You May Need
Air filter
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Spark plugs
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Control module
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Fuel filter
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Air filter
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Spark plugs
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Control module
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Fuel filter
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Air filter
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Spark plugs
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Control module
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Fuel filter
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Air filter
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Spark plugs
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Control module
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Fuel filter
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When to Call a Professional
If you have checked fuel, air filter, and governor but the error persists, or if you suspect a faulty control module or internal engine issue, contact a certified Kohler technician. Electrical repairs require expertise.Frequently Asked Questions
Can I run my Kohler generator with error code 06?
No, running the generator under speed can damage sensitive electronics and the engine. Stop using it immediately and diagnose the issue.
Will a low oil level cause error code 06?
Low oil level typically triggers a different error code (like low oil shutdown). However, low oil pressure can affect engine speed, so check oil level as part of troubleshooting.
How do I adjust the governor on a Kohler generator?
Locate the governor arm and spring. Loosen the clamp bolt, move the arm to the full throttle position, then tighten. Refer to your model's manual, as improper adjustment can cause damage.
Is error code 06 common on Kohler generators?
Yes, it's a relatively common issue, often caused by fuel problems or a dirty air filter. Regular maintenance can prevent it.
What does 'under speed' mean on a generator?
Under speed means the engine is running slower than the designed frequency (usually 60 Hz in North America). This leads to unstable voltage and can damage connected devices.