The short answer
On a Maytag oven, 4d42 points at the cooling fan circuit. The exact documented wording is in the table; the order of the checks below it is the part worth reading twice. Short cycles are generally fine; avoid long high-heat runs until cooling is confirmed.
The documented code and its meaning
Reference| Code | Meaning |
|---|---|
| 4d42 | Cooling fan speed too high. |
What you actually observe
- The fan starts and stops repeatedly — A motor struggling against load or a marginal supply.
- The cabinetry or the wall above the oven feels unusually warm — Heat that is not being carried away shows up outside the appliance.
- The fan cannot be heard at the end of a cycle — It should run on after the heat stops; silence is the key observation.
- NEAR MISS — the fan runs constantly and never stops — A fan that will not stop is the opposite fault and a different page.
Causes, most likely first on this oven
- A restricted air path around the appliance — A restricted intake or outlet slows the fan against back pressure, and the control measures speed rather than blockage.
- A fan motor with worn bearings or a fouled blade — Dust and grease load the blade, and the motor slows under its own contamination long before it stops.
- The wiring or plug feeding the fan — A high-resistance joint drops the voltage at the motor, which presents as a speed fault rather than a dead fan.
- The control output that drives and monitors the fan — Last: the control reports far more fan faults than it causes.
Check in this order, and why
- Listen for the fan at the end of a cycle — Run-on after the heat stops is expected; silence there is the single most useful observation.
- Check the vents and the surrounding cabinetry for obstruction — Trim, packaging and stored items across an intake are routine findings.
- Feel whether the exhaust air is warm and moving — Warm still air means the heat is present and nothing is moving it.
- Leave the motor and its wiring to a technician — It sits behind the fascia and is not reachable without dismantling the control area.
What an owner can safely check
- Clear anything stacked against the vents or the surrounding trim — Restriction outside the appliance is the one cause an owner can fix outright.
About 10 min
- Run a short cycle and listen for run-on afterwards — The cheapest possible confirmation that the motor turns at all.
About 15 min
- Power down at the breaker for a minute if the fan never starts — A stuck output sometimes clears; if the code returns the fault is real.
About 3 min
Before anything is opened
Safety
Unplug the appliance or switch off its breaker before removing any panel — a capacitor can hold a charge after the power is off. Isolation on a built-in oven means the breaker, not a cord. Give the cavity and the inner door glass real time to cool before working anywhere near them. Do not re-route or hold closed anything on the door circuit; it takes power away at a point the design depends on.
When this stops being an owner job
Get it looked at if the fan is silent, or the code returns with the vents clear. At that point the next step is a meter or a panel off, and a wall oven has to be unseated from its cabinet before the rear connections are reachable. Do not wait at all if there is a burning smell, visible scorching, or a breaker that trips the moment the appliance starts. Those three override everything above.
Nearest error-code pages
What this page does not cover
The 4d42 reading set out here is the shared-platform one for Maytag oven models, not a single-model one. Earlier generations that reuse these characters for a different condition are outside it. So are wiring colours, connector positions, torque figures and part numbers, all of which vary by family and belong on a family page rather than here. If a page exists for your family or model, go there first — it is the more specific answer — and the code index below lists them.
Other Maytag oven codes
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