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Error code reference

Cove Dishwasher Error Code 050103

Wash pump drive system

Cove codesCove dishwasher codes

Wash pump drive system: ADC hardware error.

First step from the service manual

Replace the MCM assembly.

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

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What 050103 means on a Cove dishwasher

Error code 050103 on a Cove dishwasher indicates a hardware fault within the Analog-to-Digital Converter (ADC) circuit of the wash pump drive system. The ADC is an internal component of the Motor Control Module (MCM) assembly that converts analog signals, such as motor current and voltage feedback, into digital data the control system can interpret. When this conversion process fails at the hardware level, the MCM cannot accurately monitor or regulate wash pump operation, triggering the 050103 fault.

This is classified as a hardware error rather than a sensor or wiring fault, meaning the fault originates inside the MCM assembly itself rather than in external components or connections. The ADC circuitry may fail due to internal component degradation, voltage transients that damage the converter circuit, or manufacturing defects within the MCM board. Because the fault is tied directly to the internal electronics of the MCM, external diagnostics such as checking wiring harness continuity or inspecting the pump motor will not resolve the underlying problem.

The prescribed first diagnostic step is replacement of the MCM assembly. Since the ADC hardware is integrated into the MCM board and is not a separately serviceable component, the entire module must be replaced when this error appears. Attempting to reset the error without replacing the MCM is unlikely to produce a lasting fix, as the hardware fault will persist and the code will return once the dishwasher attempts to run the wash pump drive system.

Source: manufacturer service documentation.

Common causes of 050103

  1. 01

    Failed MCM assembly (internal ADC fault)

    Part replacement

    The Analog-to-Digital Converter circuit inside the Motor Control Module has failed at the hardware level. This is the primary cause of 050103 and requires full MCM assembly replacement since the ADC is not a separately serviceable component.

  2. 02

    Voltage transient damage to MCM board

    Part replacement

    Power surges or voltage spikes can damage sensitive ADC circuitry on the MCM board. If the error appeared after a power outage or electrical event, the MCM board likely sustained internal damage.

  3. 03

    MCM assembly connection or seating issue

    Wiring / connection

    In rare cases, a loose harness connection to the MCM can cause intermittent hardware faults. Inspect all connectors at the MCM for secure seating before proceeding to full replacement.

  4. 04

    MCM component degradation over time

    Part replacement

    Electronic components within the MCM can degrade with age and heat cycling, eventually causing ADC hardware failures. This is more common in units with extended service histories.

See the test procedure for each cause

Frequently asked questions about 050103

What does 050103 mean on a Cove dishwasher?
Error code 050103 indicates a hardware fault in the Analog-to-Digital Converter (ADC) circuit within the wash pump drive system. This ADC is part of the Motor Control Module (MCM) assembly and is responsible for converting analog motor feedback signals into usable digital data. When the ADC hardware fails, the dishwasher cannot properly control or monitor the wash pump, and the error is triggered. Replacement of the MCM assembly is required to resolve the fault.
Can I fix error code 050103 myself?
Resolving this error requires replacing the MCM assembly, which involves working with the dishwasher's internal electronics and electrical connections. Knowledgeable DIYers with experience in appliance repair may be able to perform the swap, but the job does require proper precautions including disconnecting power before beginning. If you are not comfortable working with appliance control boards and wiring harnesses, a qualified technician is recommended.
Is it safe to use my Cove dishwasher while error 050103 is active?
It is not advisable to continue using the dishwasher with this error active. The fault indicates the MCM cannot reliably control the wash pump, which means the dishwasher may not complete cycles correctly or may shut down mid-cycle. Running the unit in this state could also place additional stress on other components.
Will resetting the dishwasher clear error code 050103?
A reset is unlikely to permanently clear error 050103 because the fault is rooted in a hardware failure inside the MCM assembly. Even if a reset temporarily clears the displayed code, the underlying ADC circuit fault remains, and the error will return once the dishwasher attempts to run the wash pump drive system. The MCM assembly must be replaced to resolve the issue.
How much does it cost to repair error code 050103 on a Cove dishwasher?
Repair costs will vary depending on parts pricing and labor rates in your area. The primary cost is the MCM assembly itself, which is a specialized control board component, plus any applicable labor charges if a technician performs the replacement. As a general range, expect total repair costs to fall somewhere between $200 and $600 depending on part availability and service rates in your region.

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