Cove Dishwasher Error Code 050138

Error code 050138 means the dishwasher's Motor Control Module (MCM) went 30 seconds without receiving internal communication from the wash pump drive system. This communication failure causes the dishwasher to stop operation and log the fault. The primary diagnostic step is to evaluate and replace the MCM assembly, though wiring and connectors should also be inspected.

A reset may temporarily clear the error from the display, but if the underlying MCM communication failure still exists, the code will return as soon as the dishwasher attempts to run the wash pump again. This code requires diagnosis and repair of the root cause, not just a reset. Continuing to run the dishwasher without addressing the fault is not recommended.

Repair costs depend on whether the issue is a wiring problem or a failed MCM assembly. If wiring or connectors are the cause, costs may be relatively low, typically in the range of $75 to $200 for a service call and labor. If the MCM assembly requires replacement, parts and labor combined can range from $300 to $600 or more, depending on parts availability and local labor rates.

This fault involves the Motor Control Module and wash pump communication circuitry, which requires component-level diagnosis and likely part replacement. A knowledgeable DIYer can inspect wiring connectors and harnesses for obvious damage, but replacing the MCM assembly is a more involved repair that typically benefits from professional experience. Working inside the dishwasher also requires disconnecting power safely before accessing any components.

The dishwasher will typically halt operation when this code is active, preventing a normal wash cycle from completing. Attempting to force the machine to run with an active communication fault in the drive system is not advisable, as the wash pump may not function properly and dishes will not be cleaned. The appliance should be serviced before returning to regular use.