The answer to 'carbon monoxide detector outlet not working' is that the issue could be caused by a faulty outlet, wiring problem, or the carbon monoxide detector itself. The most common causes are a tripped circuit breaker, loose wiring, or a malfunctioning outlet. Symptoms include the detector not powering on or displaying error lights.
To troubleshoot, first check the circuit breaker and reset it if tripped. Next, inspect the outlet for any visible damage or loose connections. If the outlet appears in good working order, the issue may be with the carbon monoxide detector itself and it will likely need to be replaced. If you are not comfortable working with electrical wiring, it's best to call a licensed electrician to diagnose and repair the problem.