Cove Dishwasher Error Code 050118

Error code 050118 indicates an over voltage condition on the Vbus within the wash pump drive system. The Vbus is the internal voltage rail that powers the wash pump motor through the motor control module (MCM). When voltage on this rail exceeds safe operating limits, the dishwasher shuts down and displays this code to prevent damage to the drive electronics and motor. The fault can originate from a failed MCM assembly or from voltage problems on the incoming utility supply.

You should not continue operating the dishwasher while this fault is present. The error indicates that the wash pump drive system detected an unsafe voltage level, and the machine shuts down specifically to prevent damage to its internal electronics. Running the unit with an unresolved over voltage condition could cause further damage to the MCM or motor, increasing repair costs.

A power reset may temporarily clear the fault code, but the error is likely to return if the underlying cause has not been corrected. If the MCM assembly has failed or if there is an ongoing voltage problem on the supply circuit, the 050118 code will reappear once the dishwasher attempts to run the wash pump again. A reset alone is not a substitute for diagnosing and repairing the root cause.

The primary fix for this error is replacement of the MCM assembly, which is an internal electronic control component. Replacing this part requires disassembly of the dishwasher and comfort working with electrical components, so most homeowners will want to hire a qualified appliance technician. If the error persists after MCM replacement, a licensed electrician may need to perform a power quality analysis on the circuit supplying the dishwasher.

Repair costs will vary depending on whether the issue lies with the MCM assembly or with the incoming power supply. MCM assembly parts for Cove dishwashers are premium components, and combined with labor, repair costs typically range from a few hundred dollars to over five hundred dollars. If a power quality analysis and electrical corrections are also needed, additional costs from a licensed electrician should be factored in.