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Error code reference

Whirlpool Microwave Error Code ERR 6

Weight sensor calibration was not performed correctly.

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Weight sensor calibration was not performed correctly.

First step from the service manual

Perform calibration as indicated in the CALIBRATION chapter.

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

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What ERR 6 means on a Whirlpool microwave

ERR 6 on a Whirlpool microwave indicates that the weight sensor calibration process was not completed correctly or was not performed at all. The weight sensor system is used in microwaves equipped with automatic cooking functions that rely on food weight to determine power levels and cook times. When this sensor is not properly calibrated, the control board cannot establish a reliable reference point, and the error code is triggered to alert the user or technician that the calibration routine needs to be addressed.

The calibration process sets a baseline zero reading for the weight sensor so that the microwave can accurately detect the mass placed on or in the cooking cavity. If the unit is installed on an uneven surface, if the calibration steps were skipped during initial setup, or if the calibration sequence was interrupted before completion, the control system will register this as an improper calibration and display ERR 6. Environmental factors such as vibration during the calibration window can also produce an inaccurate baseline reading.

The first and most important step is to repeat the calibration procedure as outlined in the calibration chapter of the unit's technical documentation. The process typically requires the microwave to be on a stable, level surface with nothing inside the cavity. If the error persists after multiple correct calibration attempts, there may be a hardware fault in the weight sensor itself or in the wiring connecting it to the control board.

Source: manufacturer service documentation.

Common causes of ERR 6

  1. 01

    Calibration process was skipped or never completed

    Wiring / connection

    The most frequent cause is that the initial calibration routine was never run after installation. Following the calibration steps in the unit's calibration chapter will typically resolve the error immediately.

  2. 02

    Calibration was interrupted before completion

    Wiring / connection

    If the calibration sequence was started but not finished, such as a power interruption or door opening mid-process, the control board records the calibration as invalid. Restarting the full calibration sequence from the beginning is required.

  3. 03

    Microwave not level during calibration

    Wiring / connection

    The weight sensor requires the unit to be on a stable, level surface to establish an accurate zero reference. Confirm the microwave is level and free from vibration, then repeat calibration.

  4. 04

    Faulty weight sensor

    Part replacement

    If correct calibration attempts continue to fail, the weight sensor itself may be defective and unable to produce a reliable signal for the control board. Checking the sensor and its wiring connections for damage or continuity faults is the next diagnostic step.

  5. 05

    Wiring or connection issue between sensor and control board

    Wiring / connection

    A loose, corroded, or damaged connector between the weight sensor and the main control board can prevent calibration data from being transmitted correctly. Inspecting the wiring harness and reseating connectors may resolve the issue.

See the test procedure for each cause

Frequently asked questions about ERR 6

What does ERR 6 mean on a Whirlpool microwave?
ERR 6 means the weight sensor calibration was not performed correctly. The weight sensor is used for automatic cooking functions that calculate cook time and power based on food weight. The error appears when the control board cannot confirm a valid calibration baseline. Running the calibration procedure again is the recommended first step.
How do I fix ERR 6 on my Whirlpool microwave?
The fix is to perform the calibration procedure as outlined in the calibration section of your unit's documentation. Make sure the microwave is on a flat, stable surface and that nothing is placed inside the cavity during the process. Complete the sequence without interruption. If the error returns after multiple correct attempts, inspect the weight sensor and its wiring connections for faults.
Will resetting my Whirlpool microwave clear ERR 6?
A simple power reset is unlikely to permanently clear ERR 6 because the error is tied to the calibration status stored in the control board. The error will typically return after the reset if calibration has not been properly completed. The correct resolution is to run the full calibration sequence successfully.
Is it safe to use my Whirlpool microwave while ERR 6 is displayed?
ERR 6 relates to the weight sensor calibration and does not indicate an electrical hazard. However, automatic cooking functions that rely on food weight will not operate accurately without a valid calibration. Basic manual cooking functions may still work, but it is best to complete the calibration before relying on the microwave for automatic or sensor-based cooking modes.
How much does it cost to repair ERR 6 on a Whirlpool microwave?
If the error is resolved by recalibration alone, there is no parts cost and any service call would be limited to a standard diagnostic or labor fee, typically in the range of $50 to $100. If the weight sensor itself needs replacement, parts and labor together could range from $75 to $200 or more depending on the model and service provider. Attempting the calibration yourself first is always the most cost-effective starting point.

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