Before you open anything

Unplug the machine at the wall and turn off its water supply first. The drum may still hold a lot of water, and it comes out fast — have towels and a shallow tray ready before opening any filter. Water and mains electricity in the same place is the one genuine hazard here. If the machine is under warranty, opening it may affect that; and anything involving the machine's wiring or its plumbing beyond the accessible filter is a job for someone qualified. Your manual takes precedence over anything here.

Where the water is supposed to go

The route is short and everything on it is mechanical:

How a washing machine empties Water leaves the drum through a sump hose, passes a filter that catches debris, is pushed by the pump into the drain hose, and exits into the standpipe or waste pipe; any of these can block. Drum the water Sump hose short, wide Filter catches debris Pump pushes it out Drain hose out The filter exists specifically to catch things before they reach the pump. Which is exactly why it is the thing that blocks. Everything on this path is mechanical. Nothing here is electronics. A blockage anywhere stops the whole chain, and the machine reports the same error for all of them.
The filter is doing its job when it clogs. That's what it's for — it's just meant to be emptied periodically, and almost nobody does.

The filter, which is usually it

Nearly every front-loading machine has a drain pump filter behind a small hatch at the bottom front, often hidden by a kick panel. It's designed to be opened by the owner without tools, and its whole purpose is to catch coins, hair grips, buttons, tissue, screws and the small hard things that survive pockets.

It fills up over months and years. When it's full enough, water can't get past and the machine stops mid-cycle with a drum full of water.

What to expect when opening it, because people are caught out:

If a machine has never had its filter cleaned and it stops draining, this is the first and usually the last thing to check.

The hose and the standpipe

If the filter is clear, the blockage is downstream. Three things to look at:

One more that surprises people: the drain hose has to rise to a certain height before it goes down. If it sits too low, or is pushed too far into the standpipe, the machine can siphon — water drains out continuously as it fills, and the machine never completes a cycle. The correct height is in the manual and it matters more than it sounds.

When it really is the pump

Pumps do fail, but less often than the internet suggests. The distinguishing signs:

A pump is a modest part and, on many machines, a replaceable one — but it involves the machine's electrics and its plumbing, which is where the sensible line is for most people.

What the error code means

Machines show a code and people search the code expecting it to name a part. It doesn't — it names a condition the machine detected, exactly like a car's diagnostic codes.

A drain error typically means: "I ran the pump for the expected time and the water level sensor still reports water in the drum." That single condition is produced by a blocked filter, a kinked hose, a blocked standpipe, a jammed impeller, a failed pump, or a faulty level sensor — all of them.

So the code tells you which chain failed, not which link. It's useful for confirming the machine has correctly identified a drainage problem, and useless for skipping the physical checks.

Two practical notes. Codes are manufacturer-specific, so a code that means one thing on one brand means something else on another — the manual or the maker's own list is the only reliable source. And after clearing a blockage, most machines need the cycle cancelled and restarted before the code goes.

Why it won't spin either

A machine that won't drain almost never spins, and this confuses people into thinking two things broke at once. They didn't.

Spinning a drum full of water would throw the machine across the room — the load is enormously heavy and unbalanced. So machines are designed to refuse to spin until the water is gone. The failed spin is a consequence, not a second fault.

The same logic explains sopping wet clothes at the end of a cycle: the machine drained partially or slowly, decided it couldn't spin safely, and stopped. Fix the drainage and the spin returns on its own.

What to check, in order

  1. Unplug it and turn off the water. Non-negotiable first step.
  2. Check the drain hose isn't kinked behind the machine. Free, thirty seconds, and a real share of cases.
  3. Check whether a nearby sink drains normally. If it doesn't, the problem is your plumbing, not the machine.
  4. Open the filter, with towels and a tray ready. Clean it and feel inside the housing for anything wrapped around the impeller.
  5. Refit the filter firmly, restore power and water, and run a short rinse-and-spin to test.
  6. If it still fails, detach the drain hose into a bucket and check whether water comes out under pressure. If it does, the machine is pumping and the blockage is beyond it. If it doesn't, the problem is upstream.
  7. Listen at the drain stage. Silence points at the pump; grinding points at something jammed.
  8. Note the code and look it up for your exact model before calling anyone — it saves a visit that only clears a filter.

Why it happened, and what stops it

The short version

The pump rarely fails; the path blocks. That path is drum → hose → filter → pump → drain hose, and the filter exists specifically to catch things before they reach the pump — which is why the filter is usually the answer. Unplug the machine, have towels ready, and open the filter hatch at the bottom front, then feel inside the housing for anything wrapped around the impeller. A kinked drain hose behind the machine is the other free fix, and a slow sink nearby means the problem is your plumbing rather than the machine. The error code names the condition, not the part, and a machine that won't drain won't spin either — that's a safety design, not a second fault.