Common Dishwasher Problems (Not Draining, Not Cleaning, Leaking)
November 9, 2026
The short version: most dishwasher problems are a clogged filter, a drain issue, a worn seal, or a failed pump. Many are easy fixes; the mechanical failures are covered by a home warranty with appliance coverage.
Dishwasher not draining
The most common complaint. Usual causes:
- Clogged filter at the bottom — clean it.
- Blocked drain hose, or a clogged garbage disposal it drains into.
- Failed drain pump — needs a technician.
Dishwasher not cleaning
- Clogged spray arms — rinse the holes clear.
- Hard-water buildup — run a cleaning cycle.
- Water not hot enough or low inlet pressure.
- Failed wash pump or motor.
Dishwasher leaking
- Worn door gasket/seal.
- Loose hose connections.
- Overfilling from a bad float or inlet valve.
When a home warranty covers it
Mechanical failures — drain pump, wash motor, inlet valve, control board — are covered on plans that include the dishwasher (see the appliance list). You file a claim, a technician is dispatched, you pay the service fee, and your plan covers the covered repair. Not covered: a filter you never cleaned, or hard-water buildup (maintenance).
Key takeaways
- Not draining? Clean the filter and check the disposal and drain hose first.
- Pump, motor, and valve failures are covered on plans with the dishwasher.
- Clogs and buildup from neglect are maintenance, not covered.
Want your dishwasher and kitchen covered? Get a free, no-obligation quote.
Frequently asked questions
Why is my dishwasher not draining? Most often a clogged filter, a blocked drain hose, or a clogged garbage disposal it shares a drain with. A failed drain pump is the mechanical cause.
Does a home warranty cover dishwasher repair? Yes, on plans that include the dishwasher — covered mechanical failures are repaired or replaced up to your plan's terms.