mypros+
Error code reference

Cove Dishwasher Error Code 050139

Wash pump drive system

Cove codesCove dishwasher codes

Wash pump drive system: Motor over temperature error (fatal). MCM calculated wash pump temperature over 140°F for two measurement trials.

First step from the service manual

Check the wash pump motor harness.

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

MyPros+ Max

Get the full diagnostic procedure for 050139.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What 050139 means on a Cove dishwasher

Error code 050139 on a Cove dishwasher indicates a fatal wash pump drive system fault caused by motor overtemperature. The Motor Control Module (MCM) continuously monitors the operating temperature of the wash pump motor. When the MCM detects that the calculated wash pump temperature has exceeded 140°F across two consecutive measurement trials, it triggers this fatal error and halts operation. The two-trial confirmation requirement is built in to prevent false positives from momentary thermal spikes, meaning the condition must be sustained and repeatable before the unit shuts down.

The wash pump motor is responsible for circulating water through the spray arms during wash and rinse cycles. If this motor runs too hot, it risks permanent winding damage, bearing failure, or insulation breakdown. Common root causes include a failing motor with degraded windings drawing excessive current, a seized or restricted pump impeller increasing mechanical load, or poor electrical connections in the motor harness causing resistance heating at the connector. Inadequate water supply or a blocked filter can also force the motor to work harder, generating excess heat.

Because this is classified as a fatal error, the dishwasher will not resume normal operation through a simple power cycle alone. The underlying thermal condition must be identified and corrected. Diagnostic work should begin at the wash pump motor harness, inspecting connectors for corrosion, loose pins, or heat damage. From there, testing the motor windings for correct resistance and checking for impeller obstruction are the next logical steps before considering motor replacement.

Source: manufacturer service documentation.

Common causes of 050139

  1. 01

    Faulty or failing wash pump motor

    Part replacement

    A motor with degraded windings draws excessive current, generating heat beyond the 140°F threshold the MCM monitors. Testing motor winding resistance can help confirm whether the motor has failed internally.

  2. 02

    Damaged or corroded motor harness connector

    Wiring / connection

    Loose pins, corroded terminals, or heat-damaged connectors in the wash pump motor harness create resistance at the connection points, causing localized overheating. Inspect the harness connector closely for discoloration, melting, or terminal push-back.

  3. 03

    Seized or obstructed pump impeller

    Wiring / connection

    A foreign object lodged in the pump impeller increases mechanical load on the motor, causing it to draw more current and overheat. Remove the pump access and check for debris, glass shards, or mineral buildup restricting impeller movement.

  4. 04

    Blocked or clogged filter assembly

    Wiring / connection

    A heavily clogged filter restricts water flow through the pump system, forcing the motor to work harder than designed and raising its operating temperature. Clean the filter and sump area thoroughly and confirm unrestricted flow.

  5. 05

    MCM miscalculation or sensor fault

    Part replacement

    If the Motor Control Module itself has a fault affecting temperature calculation, it may report an overtemperature condition inaccurately. This is the least likely cause and should only be considered after all mechanical and electrical causes have been ruled out.

See the test procedure for each cause

Frequently asked questions about 050139

What does 050139 mean on a Cove dishwasher?
Error code 050139 means the Motor Control Module detected that the wash pump motor temperature exceeded 140°F during two consecutive measurement trials, triggering a fatal overtemperature shutdown. The dishwasher stops operation to protect the motor from permanent damage. This is not a minor warning and requires hands-on diagnosis before the unit can be safely returned to service.
Can I fix error code 050139 myself?
Some steps, such as clearing a blocked filter, removing a pump impeller obstruction, or inspecting the motor harness for obvious damage, can be performed by a confident DIYer. However, testing motor winding resistance, diagnosing MCM faults, or replacing the wash pump motor typically requires proper tools and familiarity with appliance electrical systems. If you are not comfortable working with appliance wiring or internal components, a qualified technician is the safer option.
Is it safe to keep using my Cove dishwasher with error 050139?
No. Error 050139 is classified as a fatal fault, and the dishwasher is designed to stop operation when it occurs. Attempting to force the unit to run with an overheating motor risks burning out the motor windings, damaging surrounding components, or creating an electrical hazard. Do not use the dishwasher until the root cause has been identified and corrected.
Will resetting my Cove dishwasher clear error code 050139?
Because 050139 is a fatal error, a simple power cycle or reset is unlikely to clear the code permanently. The MCM requires the measured motor temperature to return to a safe range across two measurement trials before it will consider the fault resolved. If the underlying cause, such as a failing motor or blocked impeller, has not been corrected, the error will return as soon as the unit attempts to run.
How much does it cost to repair error code 050139 on a Cove dishwasher?
Repair costs vary significantly depending on the root cause. Clearing a clogged filter or removing a pump obstruction costs little to nothing if done yourself. Replacing a wash pump motor on a Cove dishwasher typically runs anywhere from $200 to $500 or more in parts and labor, depending on your location and service provider. If the Motor Control Module requires replacement, costs can be higher. Getting a diagnostic visit from a certified technician is the best way to get an accurate estimate for your specific situation.

Related Cove dishwasher codes

All Cove dishwasher codes
View all 62 Cove dishwasher codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass