What 4d21, 4d22, 4d41 or 4d42 Means
Maytag splits these by direction. 4d21 and 4d22 report the cooling fan speed as too low, naming an airflow restriction, the oven cooling fan, or the associated wiring. 4d41 and 4d42 report the fan speed as too high, with the same parts named. The fan keeps the control electronics and the surrounding cabinetry within safe temperatures.
Common Causes of 4d21, 4d22, 4d41 or 4d42
- Vent blocked by a towel, trim or stored items
- Fan bearing worn
- Fan blade fouled or obstructed
- Fan motor failing
- Control misreading fan speed
🔧 One Safe Check You Can Try
Check the vents are clear - the cooling air leaves through a vent above the door or at the rear, and a tea towel hung over the handle across that vent restricts it completely. Make sure nothing is stored against the back of a freestanding range. Press Cancel to clear the code, then switch the range off at its breaker for a minute, restore power, and start a bake cycle to see whether it returns. Listen for the fan during a bake cycle: it should be clearly audible, and a fan that sounds rough, rattly or silent matches these codes directly.
⚠ Why You Shouldn't Go Further Than That
- A range runs on a high-current circuit and its control sits behind a panel with live terminals.
- The cooling fan is inside the range structure behind mains wiring.
- Let the cavity cool completely before reaching inside.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.