The short answer
A Cafe freestanding dishwasher holding water usually has a blocked sump filter, a restricted sink waste, or a disposer whose knockout plug was never removed. All three are owner checks on this machine. Follow the drain hose too. The drain pump is last and needs the machine opened.
What you observe
- Water standing in the sump at the end of a cycle — The classic drainage signature.
- The machine hums during the drain with no flow — The pump is powered and working against a blockage.
- Water backing up into the sink when it drains — The sink waste rather than the machine.
- It drains slowly and dishes stay wet — A partial restriction affects both.
- NEAR MISS - a film of water under the filter — Normal on many machines between cycles.
Causes, most likely first on this brand
- A blocked sump filter — First and easiest. Debris in the filter and the sump beneath restricts the drain path before the pump even sees it.
- A restricted sink waste, trap or disposer — Second. They share a waste, so a blocked trap or a greased disposer spigot stops the machine emptying however well its pump works.
- A disposer knockout plug left in place — Third, and a classic. A new disposer has an internal plug where the dishwasher hose connects, and if it is not knocked out the machine can never drain.
- A kinked drain hose or a lost high loop — Fourth. On a machine that has been pulled out and pushed back, the hose is easily crushed, and a lost high loop lets the drain siphon.
- A blocked or failed drain pump — Last. A hum with no flow points here once everything upstream is clear.
Check in this order, and why
- Listen during the drain phase — A hum means powered and blocked; silence means the pump is not running.
- Remove the filter and clear the sump — The easiest part of the drain path to reach.
- Run the sink and the disposer — A slow sink is your answer and not an appliance fault.
- Pull the machine forward and follow the hose — Kinks and a lost high loop are both visible.
What an owner can safely check
- Bail the standing water out of the sump — Use a cup and a cloth so you can see what you are working on.
Tools: cup, towelsAbout 20 min
- Remove and wash the filter and clear the sump — Look for glass, seeds and labels in the recess beneath it.
Tools: brush, glovesAbout 25 min
- Clear the sink trap and run the disposer — Test that the sink drains freely on its own before blaming the machine.
About 25 min
- Pull the machine forward and check the hose — Straighten any kink and restore the high loop under the counter.
Tools: torchAbout 25 min
- STOP HERE if the pump hums with a clear path — That is the drain pump.
Before you open anything
Safety
Switch the dishwasher off at its breaker before reaching into the sump or moving the machine - a capacitor can hold a charge after the power is off. Wear gloves, because broken glass collects in the sump where you cannot see it. Treat standing water as hot if the machine stopped during a hot cycle, and get help to move the unit rather than dragging it across a finished floor.
When to call a technician
Call when the filter and sump are clear, the sink drains freely, any disposer knockout plug has been dealt with, the hose is straight with a high loop and the machine still holds water - especially if the pump hums rather than being silent. Note anything the console displayed, because on a freestanding machine that is visible information a technician can use.
Nearest pages of this class
What this page does not cover
This page covers the Cafe freestanding and slide-in dishwashers, whose drain path can be reached without dismantling cabinetry. The panel-ready integrated machines run their hose hidden through joinery and are covered on the sibling page linked below. Deliberately absent: pump part identifiers, hose lengths, high-loop height requirements and flow figures.
Links: - [Cafe integrated dishwasher not draining](/blog/caf-dishwasher-drainage-failure-2)
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
