Whirlpool Dishwasher Won't Wash? Replace the Circulation Pump — W11462455
If your Whirlpool dishwasher fills with water, drains normally, but dishes come out just as dirty as they went in — the circulation pump and motor assembly has almost certainly failed. This is the most common cause of a dishwasher that runs through a full cycle without actually cleaning anything.
This guide covers how to diagnose a failed circulation pump, which models are affected, and how to replace it using genuine OEM part W11462455 (or compatible XPart option CPF25-502).
What Does the Circulation Pump Do?
The circulation pump is the heart of your dishwasher's cleaning system. It pressurizes water drawn from the tub and forces it through the spray arms at high velocity to blast food residue off your dishes. Without a functioning circulation pump, your dishwasher is just a very expensive soaking tub.
Symptoms of a Failed Dishwasher Circulation Pump
- Dishwasher fills with water but is completely silent during the wash cycle
- Loud humming or buzzing sound without any water movement
- Dishes come out dirty after a full cycle
- Weak or no pressure from the spray arms
- Water leaking from the bottom of the dishwasher
- Grinding or rattling noises during the wash cycle
- Dishwasher runs through all cycles but dishes remain dirty
How to Diagnose the Circulation Pump
Before ordering a replacement, confirm the pump is the issue:
- Listen during the wash cycle: You should hear a steady hum and water spraying. Silence = dead motor. Humming without spray = seized impeller or capacitor failure.
- Check the door latch switch: If the door isn't registering as fully closed, the control board won't activate the pump at all.
- Inspect the capacitor: A failed start capacitor can prevent the motor from starting — a much cheaper fix than a full pump replacement.
- Check for debris: A jammed impeller from broken glass or food debris can mimic a dead motor. Inspect before replacing.
Part Information
- OEM Part Number: W11462455
- Compatible XPart Option: CPF25-502
- Replaces: W11048807, CPF25-502, W10902589, W10510667
- Compatible Brands: Whirlpool, KitchenAid, Maytag, Kenmore, Amana, Jenn-Air, Ikea
Compatible Models
JDPSG244LS0, JDPSG244LS1, JDPSG244LS2, JDPSS244LL0, JDPSS244LL1, JDPSS244LL2, JDPSS244LM0, JDPSS244LM1, JDPSS244LM2, JDPSS245LX0, JDPSS246LL0, JDPSS246LL1, JDPSS246LM0, JDPSS246LM1, KDFE204KBL0, KDFE204KBS0, KDFE204KPS0, KDFE204KWH0, KDTE204KBL0, KDTE204KBS0, KDTE204KPS0, KDTE204KWH0, WDTA80SAKZ0
How to Replace the Circulation Pump
- Disconnect power — unplug the dishwasher or turn off the breaker.
- Shut off the water supply valve under the sink.
- Remove the lower dish rack and unscrew the lower spray arm.
- Remove the filter assembly from the bottom of the tub.
- Lay the dishwasher on its back to access the pump from below (have towels ready for residual water).
- Photograph all connections before disconnecting any wires or hoses.
- Disconnect the wire harness and hoses from the pump assembly.
- Rotate and remove the old pump — it typically twists out of the sump housing.
- Install the new pump — seat it fully and rotate to lock.
- Reconnect all hoses and wiring, restore power, and run a test cycle.
Skill Level: Intermediate — 45–60 minutes. Basic appliance repair experience recommended.
Frequently Asked Questions
Q: Is W11462455 an OEM or aftermarket part?
The W11462455 is a genuine OEM Whirlpool part. We also carry the CPF25-502, a compatible aftermarket option available at a lower price point.
Q: How do I know if this pump fits my dishwasher?
Check your dishwasher's model number (found on the inner door frame) against the compatible models list above, or contact our team for fit confirmation.
Q: My dishwasher hums but won't spray — is it definitely the pump?
Not necessarily. A humming motor that won't spin often points to a failed start capacitor or a jammed impeller — both cheaper fixes. Diagnose those first before replacing the full assembly.
Q: Do you ship to Canada?
Yes — XPart Supply Ltd. is a Canadian business. We stock this part domestically for fast shipping across Canada.
Order the Replacement Part
Ready to fix your dishwasher? Shop the W11462455 Circulation Pump & Motor Assembly — in stock and ready to ship.
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