Generac fault-code utility
Find the Generac error code before you reset it.
Search the exact number or alarm text from the controller. The finder routes you to the matching source-backed guide we have verified instead of guessing from a generic symptom.
This finder intentionally includes only codes with a source-backed guide on this site. It is not a substitute for the alarm list in the manual for your exact generator and controller.
The generator tried to start but did not successfully run. Fuel supply, battery/cranking condition and model-specific starting faults can all be relevant.
Open guide →The low-oil-pressure circuit triggered a shutdown. Generac directs owners to check the oil level first and seek service when the level is correct but the alarm persists.
Open guide →The controller is not seeing the expected engine-speed signal. Preserve the exact code and circumstances because the cause can differ by model and when the fault occurs.
Open guide →Engine speed fell below the controller's expected range. Generac's homeowner guidance points first to load, fuel, airflow and maintenance condition.
Open guide →Generac says the 7.5A controller fuse is missing, not fully seated or blown. If the fuse is good, battery and cable checks come next.
Open guide →One or more shutdown switches are open/off. The switch arrangement and reset procedure vary by generator family.
Open guide →Before clearing an alarm
The code is diagnostic evidence.
Generac says owners should identify and correct the underlying condition before clearing an alarm. Procedures also differ by controller generation, so use the exact generator manual and controller-specific guidance rather than repeating resets.
Coverage today
We add codes when the evidence is strong enough to support a useful page.
Current coverage includes Overcrank 1100, Low Oil Pressure 1300, RPM Sense Loss 1500-series, Underspeed 1600-series, Fuse Problem 2400 and Auxiliary Shutdown 2800/2801. Generac publishes additional alarms; this page does not pretend every code belongs to every controller or model family.