Maytag Microwave Error Code E23

E23 means the microwave attempted a convection or grill preheat cycle but the cavity did not reach the preset target temperature within 30 minutes. The control board canceled the preheat and displayed E23. This fault is specific to convection and grill heating modes and does not affect standard microwave operation.

Standard microwave heating functions typically remain operational when E23 is active because the fault is tied specifically to the convection heater or grill heater, not the magnetron. You can use normal microwave modes, but convection and grill cooking modes will not complete a preheat cycle until the underlying fault is resolved. Do not attempt to use grill or convection modes repeatedly while the error persists, as doing so will not override the fault.

E23 is a functional fault rather than a safety emergency. The control board detected that the heating system could not perform as required and shut the preheat cycle down as a protective measure. The issue should be diagnosed and repaired before using convection or grill modes again, but the microwave does not pose an immediate hazard when the error is present. Inspect the wiring and heating element before assuming the PCB needs replacement, as those components are the most frequent causes.

Start by unplugging the microwave and checking whether the convection heater or grill heater wiring harness is disconnected or visibly damaged. Reconnect any loose connectors and test again. If the wiring looks intact, use a multimeter to test the heating element for continuity. A reading of OL or no continuity means the element has failed and needs replacement. If both the wiring and element test good, the PCB assembly may need to be replaced.

If the fix is a loose wiring connector, there is no parts cost. A replacement convection or grill heating element typically runs between $30 and $80 depending on the model. A PCB assembly is the most expensive repair, usually between $80 and $180 for the part alone. If you are not comfortable working with high-voltage microwave components, a professional appliance technician will add a service call and labor fee, which commonly brings total repair cost to $150 to $300.