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Error code reference

Maytag Range Error Code 9d42

Latch state unknown

Maytag codesMaytag range codes

Latch state unknown — neither locked nor unlocked switch reading closed (lower cavity).

First step from the service manual

LOCK flashes 3 times. Disables Clean and Lockout functions. Check both latch switches and latch motor for lower oven.

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

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What 9d42 means on a Maytag range

Error code 9d42 on a Maytag range indicates that the control board cannot determine the position of the lower oven door latch. Under normal operation, the latch assembly uses two switches to confirm position: one that closes when the latch is fully locked and one that closes when the latch is fully unlocked. When neither switch reads closed simultaneously, the control has no reliable position reference for the latch and logs this fault. The symptom at the display is LOCK flashing three times, and the control responds by disabling both the Self-Clean and Control Lockout functions for the lower oven cavity until the condition is resolved.

The latch system consists of a small motor that drives a cam or gear mechanism to slide the door hook into or out of the locked position, along with two microswitch contacts mounted at the locked and unlocked travel limits. If the motor stalls partway through a cycle, if one or both switches fail to close at their respective endpoints, or if the wiring harness to those components is damaged or disconnected, the control receives an ambiguous signal and triggers 9d42. Physical obstructions around the latch mechanism or a latch motor that has lost torque due to wear can also leave the assembly stuck in a mid-travel position where neither switch activates.

Diagnosis begins with a physical inspection of the lower oven door latch assembly. Check that the latch hook moves freely without binding, then test both latch switches for continuity at their respective travel endpoints. The latch motor should also be tested for proper function and checked for signs of overheating or seized components. Inspect the wiring harness connecting these components to the control board for broken connectors, pinched wires, or corrosion that could interrupt the switch signals.

Source: manufacturer service documentation.

Common causes of 9d42

  1. 01

    Failed latch switch

    Part replacement

    One or both of the microswitch contacts in the lower oven latch assembly have failed open and no longer send a closed signal at the locked or unlocked position. Test each switch for continuity at its travel limit to confirm.

  2. 02

    Latch motor failure

    Part replacement

    The latch motor may have stalled, seized, or lost enough torque to complete its travel, leaving the latch hook stuck at a midpoint where neither switch is activated. Listen for the motor running and check for physical movement when a clean cycle is initiated.

  3. 03

    Physical obstruction in latch mechanism

    Wiring / connection

    Grease buildup, food debris, or a deformed latch hook can prevent the assembly from traveling fully to the locked or unlocked stop. Inspect the latch area visually and clear any blockage before replacing parts.

  4. 04

    Damaged or disconnected wiring harness

    Wiring / connection

    The wires connecting the latch switches or motor to the control board may be pinched, corroded, or have a loose connector that interrupts the switch signal. Inspect the harness routing near the oven door hinge area where wires are subject to repeated flex.

  5. 05

    Control board fault

    Part replacement

    If the latch switches and motor test correctly and all wiring checks out, the control board itself may be misreading the switch inputs due to a failed input circuit. This is the least common cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about 9d42

What does 9d42 mean on a Maytag range?
Error code 9d42 means the control board for the lower oven cannot confirm whether the door latch is in the locked or unlocked position. Neither of the two latch position switches is reading closed at the same time, which puts the latch in an unknown state. In response, the range disables the self-clean and control lockout functions and flashes LOCK three times on the display.
Can I fix error code 9d42 myself?
A knowledgeable DIYer can inspect the lower oven latch assembly for visible obstructions, check harness connections, and test the latch switches for continuity with a multimeter. If a switch or the latch motor has failed, replacing those components requires some disassembly of the oven door latch housing. If the wiring and latch components all test correctly, a control board issue may be involved, which is a more complex repair.
Is it safe to keep using the range with a 9d42 error?
The rangetop burners are not affected by this fault, so basic cooking can continue. However, the self-clean cycle is disabled until the error is resolved, and if the latch position is truly unknown it is best to avoid forcing a clean cycle. Address the fault before attempting to run self-clean to prevent the oven door from being locked in an uncontrolled state.
Will resetting the range clear the 9d42 error code?
Disconnecting power to the range for a few minutes may temporarily clear the code, but if the underlying problem with the latch switches, motor, or wiring is not repaired the error will return. A reset does not fix a failed switch or a mechanically stuck latch, so the root cause must be diagnosed and corrected for the code to stay cleared.
How much does it cost to repair a 9d42 error on a Maytag range?
Repair costs depend on which component has failed. Latch switches are relatively inexpensive parts, typically in the range of 15 to 40 dollars each, while a latch motor assembly can run from 40 to 120 dollars depending on the model. Adding professional labor, total repair costs commonly fall between 100 and 300 dollars, though a control board replacement would push costs toward the higher end of that range or beyond.

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