Dishwasher Not Draining? Fix It in 6 Steps
Is there standing water after a wash cycle?
It causes odors, bacteria, and can damage cabinets.
Try these 6 safe steps—and know when to call a pro.
Common Causes
- Clogged filter or sump area.
- Air gap clogged or disposal knockout not removed.
- Improper high loop or check valve stuck.
- Kinked drain hose or blocked disposal inlet.
- Pump jammed/failing.
6 DIY Steps
- Clean the filter (twist out, rinse, clear debris).
- Clear the air gap (cap off, scrub, flush).
- Disposal knockout (new installs): ensure it’s punched out for the DW drain.
- Set a proper high loop under sink to prevent backflow.
- Inspect hose for kinks/clogs; reseat to disposal/air gap.
- Run a rinse/drain cycle to test.
When to Call a Pro
- Motor hums but won’t pump; burning smell; leaks.
- Repeated standing water after steps above.
- Electrical or board errors.
Costs (Typical)
- Filter/air-gap/high-loop fixes: $90–$180.
- Hose or check valve: $120–$250.
- Pump assembly: $220–$420+.
FAQs
- Vinegar/baking soda ok? Yes, modestly; avoid harsh drain chemicals.
- How often to clean the filter? Every 1–3 months, more with heavy use.
