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Error code reference

Mabe Dishwasher Error Code E3

Heating time too long without reaching the required temperature; possible temperature sensor or heating…

Mabe codesMabe dishwasher codes

Heating time too long without reaching the required temperature; possible temperature sensor or heating element failure.

First step from the service manual

Check the temperature sensor and heating element for faults.

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

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  • Wiring diagram references and connector pinouts from the OEM service manual
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What E3 means on a Mabe dishwasher

The E3 error code on a Mabe dishwasher indicates that the heating system has exceeded its maximum allowable time without reaching the target water temperature. During wash and rinse cycles, the control board monitors how long the heating element has been active and compares elapsed time against the expected temperature rise. When the water temperature fails to climb to the required setpoint within the permitted window, the board triggers E3 and halts the cycle to prevent damage and energy waste.

The two primary components involved are the temperature sensor (NTC thermistor) and the heating element. A failed or drifted thermistor can send inaccurate readings to the control board, making it believe the water is cooler than it actually is, or preventing the board from confirming that the target temperature has been reached. Conversely, a faulty heating element may draw reduced current or no current at all, meaning the water genuinely fails to heat. Both scenarios produce the same E3 fault from the control board's perspective.

Additional causes can include a defective circulation pump that prevents adequate water contact with the heating element, wiring harness faults between the sensor or element and the control board, or a failed control board relay that is not supplying power to the element. Begin diagnosis by checking the temperature sensor resistance and verifying continuity through the heating element before moving to wiring and board-level inspection.

Source: manufacturer service documentation.

Common causes of E3

  1. 01

    Faulty heating element

    Part replacement

    The heating element may have an open circuit or reduced heating capacity, preventing the water from reaching the required temperature. Check for continuity across the element terminals and look for visible burn marks or cracks.

  2. 02

    Failed temperature sensor (NTC thermistor)

    Part replacement

    A defective thermistor can report incorrect water temperature values to the control board, causing the board to keep heating indefinitely or halt prematurely. Measure the sensor's resistance and compare it against the expected value for the water temperature in the tub.

  3. 03

    Wiring or connector fault

    Wiring / connection

    Corroded, loose, or broken wiring connections between the heating element, temperature sensor, and control board can interrupt the circuit and mimic a component failure. Inspect the harness connectors at both ends for corrosion or damage.

  4. 04

    Circulation pump issue

    Part replacement

    If the circulation pump is not moving water adequately through the tub, water may not make proper contact with the heating element, slowing temperature rise and triggering E3. Listen for abnormal pump noise and verify pump operation during a cycle.

  5. 05

    Control board relay failure

    Part replacement

    The control board relay responsible for supplying voltage to the heating element may have failed, meaning the element never receives power even though the board commands heating. This is typically diagnosed after the element and sensor have been confirmed good.

See the test procedure for each cause

Frequently asked questions about E3

What does E3 mean on a Mabe dishwasher?
E3 means the dishwasher took too long to reach the required water temperature during a heating phase. The control board monitors heating time, and when the target temperature is not achieved within the allowed window, it displays E3 and stops the cycle. The most likely causes are a failed heating element or a faulty temperature sensor. Both components should be checked before proceeding to wiring or control board diagnosis.
Can I fix an E3 error on my Mabe dishwasher myself?
Some aspects of E3 diagnosis are accessible to a confident DIYer, such as inspecting wiring connectors for corrosion and testing the heating element for continuity with a multimeter. Replacing the temperature sensor is also a relatively straightforward repair on most models. However, if the control board relay is the root cause, board-level repair or replacement is best handled by a qualified technician.
Is it safe to run my Mabe dishwasher with an E3 error?
You should not continue running the dishwasher while E3 is active. The appliance will not complete cycles correctly, and dishes will not be sanitized at the proper temperature. Continuing to operate the unit with a faulty heating circuit can place unnecessary stress on the control board and pump. Resolve the underlying fault before resuming normal use.
How much does it cost to repair an E3 error on a Mabe dishwasher?
Repair costs vary depending on the faulty component. A replacement temperature sensor typically costs in the range of $15 to $40 for the part, while a new heating element generally runs between $30 and $80. Adding professional labor can bring the total repair cost to somewhere between $100 and $250 or more, depending on your location and the technician's rates.
Will resetting the dishwasher clear the E3 error code?
Resetting the dishwasher may temporarily clear the E3 code, but it will return as soon as the unit attempts another heating cycle if the underlying fault has not been corrected. A reset is useful for confirming whether the error was caused by a one-time glitch, but persistent E3 codes require physical inspection and testing of the heating element and temperature sensor.

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