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Error code reference

Maytag Range Error Code 4d52

Lower oven door switch circuit failure; switch not reading open or closed during convect, clean, or keyboard…

Maytag codesMaytag range codes

Lower oven door switch circuit failure; switch not reading open or closed during convect, clean, or keyboard lockout.

First step from the service manual

Check door switch wiring; disables convect, clean, and lockout functions.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What 4d52 means on a Maytag range

Error code 4D52 indicates the control board has detected a door switch circuit failure in the lower oven cavity. Specifically, the board cannot confirm whether the door switch is in an open or closed state, meaning the signal it receives does not correspond to a valid door position. This points to a problem in the door switch circuit itself, the wiring harness connecting the switch to the control board, or the switch component. The board monitors this circuit continuously, and when the signal falls outside expected parameters for both open and closed states, it triggers this fault.

For a homeowner, this means your Maytag range has lost the ability to reliably detect whether the lower oven door is open or shut. The door switch plays a key role in oven functions like the broil element, oven light, and self-clean cycle operation. When the circuit fails, the control board defaults to this error rather than risk operating the oven with an unknown door state. You may notice the oven light behaving unexpectedly, self-clean refusing to start, or the oven not heating normally. The root cause is most often a damaged wire, a loose connector, or a worn door switch, all of which are serviceable repairs.

Source: manufacturer service documentation.

Common causes of 4d52

  1. 01

    Damaged or disconnected wiring harness at the door switch

    Wiring / connection

    The wiring harness running from the lower oven door switch to the control board can fray, burn, or pull loose from its connector, breaking the circuit signal. This is the first area to inspect and is the most common source of this fault code.

  2. 02

    Failed lower oven door switch

    Part replacement

    The door switch itself can wear out or fail mechanically, preventing it from sending a valid open or closed signal regardless of door position. A failed switch will read as neither state, which directly triggers the 4D52 code.

  3. 03

    Corroded or loose connector pins at the door switch or control board

    Wiring / connection

    Moisture, heat cycling, and vibration can cause connector pins to corrode or back out of their housings, creating an intermittent or absent signal on the door switch circuit. The circuit may appear intact by visual inspection but fail under normal operating conditions.

  4. 04

    Faulty electronic control board

    Part replacement

    If the wiring and door switch both test within specification, the control board itself may have a failed input circuit for the door switch signal. This is the least likely cause but should be considered after all other components have been verified.

See the test procedure for each cause

Frequently asked questions about 4d52

What does error code 4D52 mean on a Maytag range?
Code 4D52 means the control board has detected a door switch circuit failure in the lower oven cavity. The board is unable to determine whether the door switch is open or closed, which indicates a problem with the switch itself, the wiring harness, or the connectors in that circuit. The control board triggers this fault to prevent operating the oven with an unknown door state.
Is it safe to use my Maytag range while the 4D52 error code is active?
Using the range with 4D52 active is not recommended for oven functions. The control board cannot confirm door position, which can interfere with broil operation, the self-clean cycle, and other oven functions that depend on door state. Surface burners on a gas or electric range may still operate, but the lower oven should not be used until the door switch circuit is repaired.
How do I fix error code 4D52 on a Maytag range?
Start by inspecting the door switch circuit and wiring harness on the lower oven cavity. Check the wire harness running from the door switch to the control board for any signs of fraying, burning, or disconnection, and reseat any loose connectors. If the wiring looks intact, use a multimeter to test the door switch for continuity in both open and closed positions. A switch that does not change state should be replaced. If the switch and wiring both test correctly, the control board may need replacement.
How much does it cost to fix a 4D52 error on a Maytag range?
A replacement lower oven door switch typically costs between $15 and $40 for the part, making it one of the more affordable fixes if you can replace it yourself. A wiring harness repair or connector replacement may cost little to nothing beyond your time. If the control board is the cause, board replacement can run $150 to $350 or more for the part alone. Adding professional labor, expect a total repair cost anywhere from $100 to $500 depending on the actual failed component.
Can a loose wire cause the 4D52 code on a Maytag range?
Yes, a loose or disconnected wire at the door switch or at the control board connector is one of the most common causes of the 4D52 code. Because the board cannot confirm a valid open or closed signal, even a partially disconnected connector is enough to trigger this fault. Reseating all connectors in the door switch circuit is a good first step before replacing any parts.

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