Honda EU2200i CO ALARM
What it means: CO-MINDER detected a high carbon monoxide concentration and stopped the engine. The indicator flashes for about five minutes.
What to do
Move the generator to fresh air, away from the source of carbon monoxide, and not in an enclosed area. Press the CO-MINDER reset button, then restart using the standard procedure. If the indicator stays on after reset, the sensor may be near end of life.
When to call service
The manual lists steps the owner can take. If the code comes back after them, or you are unsure, contact an authorized service dealer. The unit stops or will not start until the cause is cleared.
Source: official Honda manual, page 7, read . Summary of the manual, not a reproduction.
What it means: The CO-MINDER system has detected high carbon monoxide levels around the generator and automatically stops the engine. Flashing CO ALARM indicator with a no-start may also indicate a CO-MINDER malfunction or a sensor at end of life.
What to do
Move the generator to a well-ventilated outdoor location away from windows, doors, and vents. Press the CO-MINDER reset button to restart the engine. If the engine will not start and the CO ALARM indicator keeps flashing after relocation, consult an authorized Honda Power Equipment dealer.
When to call service
The manual directs you to an authorized Honda 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 Honda manual, page 16, read . Summary of the manual, not a reproduction.
Models this manual covers
Honda EU2200i, Honda EU7000iS, Honda EG4000, Honda EU3000iS, Honda EG2800i, Honda EB2800i.
CO ALARM in other Honda manuals
- EB5000: CO-MINDER detected high carbon monoxide around the generator and stopped the engine. The indicator flashes for about five minutes. Restarting without pressing reset stops the engine again immediately.
Other EU2200i codes
Questions
What does Honda CO ALARM mean?
CO-MINDER detected a high carbon monoxide concentration and stopped the engine. The indicator flashes for about five minutes. (Honda manual for the EU2200i, page 7.)
How do I fix Honda CO ALARM?
Move the generator to fresh air, away from the source of carbon monoxide, and not in an enclosed area. Press the CO-MINDER reset button, then restart using the standard procedure. If the indicator stays on after reset, the sensor may be near end of life. 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 15 EU2200i codes →