Code overview
Content status: Verified
- Error code
- 3D21
- Appliance
- Wall Oven
Maytag wall oven code 3D21: what the display means and the power reset steps to try.
Model compatibility: Maytag reuses codes across series and model years, so 3D21 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
What this code means
3D21
The oven temperature sensor, the control, or the associated wiring may have a problem.
Basics
An oven that displays 3D21 is flagging a sensor, control or wiring issue, as the Maytag help entry puts it.
The fix in the manual
- Open with the breaker(s) that feed the oven, switched off.
- Let one minute pass.
- Breaker(s) on, then keep one eye on the panel for 3D21.
- Wrap up by verifying operation.
Codes close to 3D21
- 3D22: same sensor, control and wiring theme.
- 3D12: another temperature sensor code.
- 3D11: sensor-and-control wording like this one.
If you see 3D21 a second time after the reset, call service.
Maytag wall oven repair near you
We take Maytag wall oven calls in the Miami, New York, Houston, Los Angeles and San Diego metro areas at (844) 415-0954. Prepare the model number, the 3D21 code and a note on what you tried. More: oven repair.
Source: 3D21 Wall Oven – Product Help
Safety warning
Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Sources & references
Tell us what’s wrong — we’ll take it from there
Share a few details and we’ll confirm an appointment. Prefer to talk? Call us and we’ll help right away.