Dishwasher Not Draining

Why a Dishwasher Won't Drain

A dishwasher that finishes a cycle with standing water in the tub usually has a blockage or failed component somewhere in the drain path. A clogged drain pump or filter is the most common cause, especially when food debris builds up faster than the filter is cleaned. A kinked or clogged drain hose restricts flow between the dishwasher and the sink drain or garbage disposal, often after a recent disposal installation pinches the line. A failed drain solenoid or check valve can let water pump out partway then siphon back into the tub, leaving a shallow pool after the cycle ends. A clogged air gap, the small cylinder near the faucet on some installations, backs up drainage even when every internal component is working correctly. Each of these produces a slightly different pattern of standing water, which helps narrow down the cause before a technician arrives.

How San Marcos Appliance Repair Fixes It

A technician tests the drain pump, inspects the drain hose for kinks or clogs, checks the drain solenoid or check valve, and clears the air gap if the installation has one. San Marcos Appliance Repair carries common parts for Whirlpool, GE, Bosch, KitchenAid, Samsung, LG, and Kenmore dishwashers, so most drain repairs are completed in a single visit. Every completed repair includes a 90-day parts-and-labor warranty, and same-day appointments are available seven days a week across San Marcos and North San Diego County. Call 760-621-5157 to schedule a technician today.

Diagnosed by Certified Technicians

A technician evaluating the drain pump, drain hose, drain solenoid, and air gap on this repair holds NASTeC certification in appliance service and repair, trained through MiraCosta College's Technology Career Institute or San Diego College of Continuing Education (SDCCE) before joining the team led by founder and Master Appliance Repair Technician Francisco Ortega, who has run San Marcos Appliance Repair since 2006. That training is what backs the 90-day parts-and-labor warranty on every dishwasher not draining repair, backed by our licensed and insured guarantee.