The answer to 'P-trap frozen' is that a frozen P-trap is a common plumbing issue caused by freezing temperatures. The P-trap is the curved pipe under a sink or tub that holds water to prevent sewer gases from entering the home. When this water freezes, it can cause the pipe to crack or burst, leading to leaks and water damage.
Symptoms of a frozen P-trap include slow or no water drainage, strange gurgling sounds, and a foul sewage odor. To fix a frozen P-trap, you'll need to thaw the pipe and potentially replace the damaged section. This is usually a DIY-friendly task, but in some cases, it's best to call a professional plumber, especially if the pipe has burst or the issue is difficult to access.