Cove Dishwasher Error Code 800186

Error code 800186 on a Cove dishwasher indicates that the drain pump motor, identified internally as MOT4, is detecting insufficient or poor draining from the dishwasher tub. The control board has determined that water is not being removed adequately during the drain cycle. This can be caused by a blockage in the drain path or a failure of the drain pump motor itself.

It is not recommended to continue running the dishwasher while this error is active. Insufficient draining means standing water may remain in the tub, which can lead to unsanitary conditions, water damage, and additional strain on the pump motor. Address the underlying cause before resuming normal use.

If the fix is a simple drain cleaning or hose adjustment, costs may be minimal, primarily covering your time or a basic service call fee ranging from around $75 to $150. If the MOT4 drain pump motor requires replacement, parts and labor combined can range from approximately $150 to $400 or more depending on your location and service provider.

Start by cleaning the dishwasher filter and inspecting the sump area for debris. Next, check the drain hose for kinks or clogs and verify the air gap or garbage disposal connection is clear. If the drain path is unobstructed and the error continues, the MOT4 drain pump motor may need to be tested and replaced by a qualified technician.

Resetting the dishwasher may temporarily clear the error code from the display, but the code will return if the underlying drain issue has not been resolved. The fault is triggered by an actual draining performance problem, so a reset alone is not a fix. Diagnose and correct the cause before attempting to reset.