Likely Causes
A clogged or blocked spray arm
A clogged or blocked spray arm. This is one of the more frequent reasons homeowners in our service area call about this exact symptom.
A worn wash impeller or pump
A worn wash impeller or pump. This is one of the more frequent reasons homeowners in our service area call about this exact symptom.
A failing water inlet valve reducing fill volume
A failing water inlet valve reducing fill volume. This is one of the more frequent reasons homeowners in our service area call about this exact symptom.
Safe Checks You Can Try First
- Remove and rinse the spray arms, checking each hole for blockages
- Make sure dishes and racks aren't blocking the spray arm's rotation
- Confirm hot water is reaching the dishwasher (run the sink hot before starting a cycle)
When to Call a Technician
If cleaning performance doesn't improve, the pump or inlet valve should be inspected.
Frequently Asked Questions
No — most cases like this are a specific, repairable part failure rather than a sign the whole unit needs replacing. A technician can tell you the realistic cost-versus-replace comparison on the spot.
The checks above are safe to try yourself. Beyond that, appliance repair involves electrical, gas, or refrigerant systems that are best left to a trained technician.