Cove Dishwasher Error Code 700166

Error code 700166 is a PE1 pressure sensor fault indicating the dishwasher detected an overfill condition while the wash cycle was inactive. The pressure sensor measured a water level above the acceptable threshold at a time when no active program should have been adding water. The machine stops operation automatically to prevent overflow. Common triggers include trapped water from improperly loaded dishes, incomplete draining, or a failing inlet valve.

A simple power reset alone is unlikely to permanently resolve this fault if there is an underlying cause such as standing water, a drain restriction, or a leaking inlet valve. The recommended approach is to empty the unit and run a Rinse/Hold cycle rather than just cycling power. If the root cause is not addressed, the PE1 fault will likely return during or after the next wash cycle.

Repair costs vary significantly depending on the root cause. If the issue is resolved by clearing a clogged drain filter or correcting dish placement, there is no parts cost involved. If a component such as the water inlet valve or pressure sensor requires replacement, parts and labor costs typically range from a modest service call fee up to several hundred dollars depending on your location and the specific parts needed. A professional diagnosis is the best way to get an accurate estimate for your situation.

Start by removing all dishes from the unit, then run a Rinse/Hold cycle to allow the machine to drain and reset its water level readings. If the error clears, reload dishes carefully so no items are positioned to collect water. If the error persists after the Rinse/Hold test, inspect the drain filter, sump, and drain hose for obstructions, and consider having the inlet valve and pressure sensor evaluated by a qualified technician.

You should not attempt to run a full wash cycle while this fault is active. The PE1 code means the machine has detected a water level condition that could lead to overflow, and the unit has halted operation as a safety measure. Operating the dishwasher before diagnosing and clearing the root cause risks water damage to your kitchen. Complete the recommended diagnostic steps first, and only resume normal use once the fault has cleared.