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Error code reference

Thermador Range Error Code 06

WFK 2401 washer

Thermador codesThermador range codes

WFK 2401 washer: Door open or won't lock.

First step from the service manual

Close door securely. Check door latch and door hinge alignment. Measure resistance of door lock mechanism (~300-1350 ohms).

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

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What 06 means on a Thermador range

Error code 06 on a Thermador range (associated with the WFK 2401 washer system) indicates that the door is either open or has failed to lock properly. This code is generated when the control board does not receive confirmation that the door latch has engaged and secured the door in the closed position. The door lock mechanism serves a critical safety function, preventing operation while the door is unsecured, so the appliance will not proceed with a cycle until the system detects a valid locked state.

The door lock mechanism contains electrical components that the control board monitors by measuring resistance. A properly functioning door lock assembly should read approximately 300 to 1350 ohms when tested with a multimeter. Readings outside this range indicate a faulty lock mechanism that needs replacement. Beyond the electrical components, the physical alignment of the door hinge and latch strike plate must also be correct. If the door is warped, the hinge is loose, or the strike plate has shifted, the latch may not engage fully even if the lock mechanism itself is electrically sound.

Common causes include debris or residue blocking the latch from fully engaging, hinge misalignment causing the door to hang unevenly, a worn or broken latch hook, and a failed door lock motor or switch assembly. Technicians should begin by visually inspecting the latch and hinge, then proceed to resistance testing of the lock mechanism to isolate whether the fault is mechanical or electrical in nature.

Source: manufacturer service documentation.

Common causes of 06

  1. 01

    Door not fully closed

    Wiring / connection

    The door may not be fully pushed shut due to items blocking the seal or the user not closing it with enough force. Try firmly closing the door and listen for the latch to click into place.

  2. 02

    Hinge misalignment

    Part replacement

    A bent or loose door hinge can cause the door to hang at an angle, preventing the latch hook from aligning with the strike plate. Inspect the hinges for visible damage or looseness and check that the door sits flush when closed.

  3. 03

    Worn or broken door latch hook

    Part replacement

    Repeated use can wear down or break the plastic or metal latch hook, preventing it from fully engaging the strike plate. Visually inspect the latch hook for cracks, deformation, or missing material.

  4. 04

    Failed door lock mechanism

    Part replacement

    The door lock assembly contains electrical components that must read between approximately 300 and 1350 ohms. A reading outside this range indicates an internal failure of the lock motor or switch, requiring replacement of the assembly.

  5. 05

    Debris or residue in the latch

    Wiring / connection

    Food particles, grease, or residue can accumulate in the latch recess and physically block the latch from seating fully. Clean the latch area thoroughly and test whether the door locks correctly afterward.

See the test procedure for each cause

Frequently asked questions about 06

What does 06 mean on a Thermador range?
Error code 06 indicates that the door is open or has failed to lock properly. The control board monitors the door lock mechanism and will not allow operation until it receives confirmation that the door is securely latched. This is a safety interlock, and the appliance will remain non-operational until the issue is resolved.
How do I fix error code 06 on a Thermador range?
Start by firmly closing the door and checking whether the latch clicks into place. Inspect the door hinges for misalignment and clear any debris from the latch area. If the error persists, test the resistance of the door lock mechanism with a multimeter. A reading outside the 300 to 1350 ohm range means the lock assembly needs to be replaced.
Is it safe to use my Thermador range when error code 06 is displayed?
No, you should not attempt to operate the appliance while error code 06 is active. The door lock is a safety interlock, and the system is designed to prevent operation when the door is not confirmed as securely closed. Attempting to bypass this error could pose a safety risk.
Will resetting my Thermador range clear error code 06?
A reset may temporarily clear the code, but if the underlying cause is a faulty latch, misaligned hinge, or failed lock mechanism, the error will return as soon as a cycle is attempted. The root cause must be diagnosed and corrected for the code to be permanently resolved.
How much does it cost to repair error code 06 on a Thermador range?
Repair costs vary depending on the cause. If only cleaning or a minor hinge adjustment is needed, costs may be minimal. Replacing a door latch assembly or door lock mechanism typically involves parts costs in the range of $30 to $150, plus labor if a technician is hired, which can bring the total to $100 to $300 or more depending on your location and the extent of the repair.

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