Dishwasher Not Draining: What to Check Before Calling a Technician
You open the dishwasher after the cycle and there's a pool of water sitting at the bottom, sometimes with a faint sour smell. The dishes aren't clean, and running it again doesn't help.
What you’re seeing
- Standing water (an inch or more) remains in the tub after the cycle ends
- A low humming or buzzing sound during the drain portion of the cycle
- Error code on the display pointing at a drain problem (varies by brand)
- Food particles or a greasy film left on dishes that were clean-going-in
- Water backing up into the sink when the dishwasher drains
3 things to check yourself
- Clean the drain filter. Pull out the bottom rack, twist out the cylindrical filter at the tub floor, and rinse off trapped food and grease under hot water.
- Check the air gap (if your sink has one). That small chrome dome next to the faucet — lift its cap and clear any food debris packed inside.
- Look at the garbage disposal. If you just replaced the disposal, the drain hose's knockout plug may still be in place — water from the dishwasher literally has nowhere to go.
When to call us
If the tub still holds water after these checks, the drain pump, a clogged drain hose, or the check valve has failed — and finding which one takes a real diagnosis, not guessing with parts. Our $95 diagnostic visit (free with the repair) pinpoints the failed component and quotes the full repair before any work starts. Call (747) 218-2666 — we cover Reseda and the San Fernando Valley, Mo–Su 08:00–20:00.
Book a visit
Same-day slots fill up by midday. Call or email and we'll lock in your window.
$95 diagnostic at your home — free when you repair with us. Full price in writing before we start. Labor warranty 1 month, parts warranty 3 months.