Generac GP15500EFI code 1-1
What it means: Carbon monoxide is above the limit, or input voltage to the COsense module is below normal range. COsense shuts off the engine when CO accumulates.
What to do
Move generator outside, away from windows, doors, and vents, and point the exhaust away from people and buildings. Contact an IASD.
When to call service
The manual directs you to an authorized Generac service dealer for this code if the steps above do not clear it. The unit stops or will not start until the cause is cleared.
Source: official Generac manual, page 9, read . Summary of the manual, not a reproduction.
Models this manual covers
Generac GP15500EFI, Generac GP18000EFI.
Other GP15500EFI codes
Questions
What does Generac code 1-1 mean?
Carbon monoxide is above the limit, or input voltage to the COsense module is below normal range. COsense shuts off the engine when CO accumulates. (Generac manual for the GP15500EFI, page 9.)
How do I fix Generac code 1-1?
Move generator outside, away from windows, doors, and vents, and point the exhaust away from people and buildings. Contact an IASD. The manual says to contact an authorized service dealer if it continues.
Fuel, gas and electrical work on a portable / inverter generator is for qualified technicians; follow the safety section of the manual. All 6 GP15500EFI codes →