Maytag Microwave Error Code Error 4

Error 4 on the Maytag MMC5080AA microwave means the door was detected as open when you attempted to start a sensor cooking program. The microwave requires the door to be fully closed and latched before it will allow a sensor program to run. This is a built-in safety condition that prevents the appliance from operating with an unsecured door. In many cases, simply closing the door firmly and pressing PAUSE/CANCEL will clear the error.

Error 4 is itself a safety feature, not a safety hazard. The microwave is preventing operation because it cannot confirm the door is securely closed, which protects against microwave energy exposure. As long as the unit displays this error and refuses to run, it is behaving correctly. You should not attempt to bypass or override the door interlock system, as that would create a genuine safety risk.

If the fix is simply closing the door properly, there is no cost involved. If a door interlock switch needs replacement, parts typically range from around $10 to $35 depending on the specific switch, with professional labor adding $50 to $150 or more depending on your area. A broken door latch assembly is similarly priced for parts, though labor costs apply if you use a technician. Evaluating whether repair cost is worthwhile compared to the age and replacement cost of the unit is always a reasonable consideration.

Start by closing the door firmly until you hear the latch click, then press the PAUSE/CANCEL button to clear the error, and attempt to restart your sensor program. If the error returns consistently, inspect the door latch hooks for visible cracks or breaks and check whether the door closes squarely in the frame. A faulty door interlock switch is the next most likely cause and can be tested with a multimeter for continuity. Replacing a failed switch or latch assembly typically resolves the issue.

Pressing PAUSE/CANCEL is the correct reset step for Error 4 on this model, and it will clear the error display. However, if the underlying condition, such as an open or unlatched door, has not been resolved, the error will return as soon as you attempt to start a sensor program again. A persistent Error 4 after resetting points to a mechanical or electrical problem with the door latch or interlock switches that needs to be addressed.