Small items inadvertently loaded into the dishwasher (olive pits, cherry stones, glass shards from broken stemware, plastic utensil handles, or bottle labels) can pass the filter and lodge precisely at a barbed fitting, an elbow, or the disposal connection port.

The Critical Pathway: A Comprehensive Analysis of Dishwasher Drain Hose Clogs, Their Etiology, Diagnosis, and Remediation

If the drain hose connects to a garbage disposal, ensure the disposal’s drain plug (knockout) was removed during installation. A still-intact plug is a 100% blockage masquerading as a hose clog. 5. Step-by-Step Remediation Protocol Safety First: Disconnect power to the dishwasher (unplug or trip circuit breaker) and turn off the water supply. Place towels under the front of the machine.

| Symptom | Likely Location | Action | | :--- | :--- | :--- | | Water in bottom of tub; no draining sound | Drain pump failure or obstruction (e.g., glass in impeller) | Check pump impeller manually. | | Water drains slowly, then stops | Partial hose clog or high loop obstruction | Proceed to hose inspection. | | Water drains but backs up into sink | Clogged sink drain or disposal knockout plug still in place | Run sink water; check disposal. | | Gurgling noise during drain | Air gap or high loop restriction | Clean air gap cap. | | No error code but water remains | Check float switch or control board | Electrical diagnosis. |

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