Washing Machine Error Codes: What They Mean and How to Fix Them
Quick answer: the great majority of washer error codes fall into three categories — drainage, water supply, or a sensor fault — and which one you’re looking at usually points straight to a specific, checkable part before you need a technician at all.
“Washer threw an error code I’d never seen and just stopped mid-cycle with wet laundry inside. Julia talked me through checking the filter over the phone before booking anything — turned out that was it. Saved me a repair call entirely.”
Why Washers Show Error Codes
Washers time nearly every phase of a cycle — how long filling takes, how long draining takes, whether the drum is spinning at the expected speed once the load is balanced. A code appears when one of those phases takes too long or reports an impossible reading, which is the board’s way of stopping before it does something worse, like continuing to spin an unbalanced load.
Common Washer Error Codes by Brand
These are the codes we field calls about most, each with a full walkthrough:
- Whirlpool F21 — long drain time. See our full F21 guide.
- Maytag F21 / F8E1 — drainage and water supply. See our F21 guide and F8E1 guide.
- LG i20 — drainage issue. See our full i20 guide.
- Samsung 4C — water supply issue. See our full 4C guide.
- Bosch E17 / E18 — supply and drainage faults. See our E17 guide and E18 guide.
- LG dE, generic E4 — door not closing or locking, covered below under “Washer Door Won’t Close or Lock”.
- LG LE, generic E6 — motor fault, covered below under “Washer Motor Fault”.
- LG FE — overfilling, covered below under “Washer Overfilling With Water”.
- Generic E5 — water not heating, covered below under “Washer Won’t Heat the Water”.
- Generic OE / E2 / F21 — drain fault, same as “Washer Won’t Drain” above, different label.
- Generic UE / U6 / DC / E4, E3 — unbalanced load, same as “Washer Not Spinning” above, different label.
- Generic LE / E9, F22 — motor or door fault, same as “Washer Motor Fault” / “Washer Door Won’t Close or Lock” above, different label.
- Generic PE / FE, E5 — water level sensor fault, same as “Washer Overfilling” above, different label.
- SD / A-10 — drain-related fault seen on some models, same as “Washer Won’t Drain” above.
Washer Won’t Fill or Fills Slowly
Check both shutoff valves behind the machine first — a partially closed valve is the single most common cause, especially after any nearby plumbing work. If both are fully open, inspect the supply hoses for kinks and the small mesh inlet filter screens where the hoses connect, which collect sediment over time and restrict flow gradually enough that people don’t always notice until it’s severe.
Washer Not Spinning or Spinning Slowly
A load that’s badly unbalanced — a single heavy item like a comforter bunched to one side — is the most common cause, and most washers will pause and attempt to redistribute the load automatically before giving up and stopping. If redistributing a more balanced load doesn’t help, check that the drive belt (on older top-load models) isn’t loose or worn, or that the lid switch (which many washers require to be engaged before spinning) is making proper contact.
Washer Won’t Drain
The pump filter behind the small access panel at the bottom-front of the machine is the first place to check — coins, hair ties, and lint accumulate there and are a five-minute fix once you find the panel. If the filter’s clear, check the drain hose for kinks along its full length behind the machine.
Washer Door Won’t Close or Lock
Check for a stray sock or piece of clothing caught in the door seal or latch area before anything else — it is the single most common cause and takes seconds to rule out. Clean the latch itself, since detergent residue buildup there is enough to stop it engaging fully. If the door still will not lock with a clear latch, the lock assembly has likely failed and needs replacing — do not force the door shut, which can damage the latch further.
Washer Motor Fault
A motor that is overloaded — usually from a single very heavy, bulky load like a comforter or a rug — will overheat and the washer will stop as a protective measure. Let the machine cool down and try a smaller load. If the fault returns with a normal-sized, reasonably balanced load, that points to an electrical or sensor issue with the motor itself, which needs a technician rather than a retry.
Washer Overfilling With Water
This one is a safety issue, not a troubleshoot-it-yourself situation — turn the washer off immediately if you see it filling past the normal level to prevent a leak or overflow. The usual cause is a faulty water inlet valve stuck open, or a failed pressure switch that is no longer telling the machine when to stop filling. Both are component replacements.
Washer Won’t Heat the Water
If clothes come out of a “hot” cycle feeling only lukewarm, reset the washer and try again on a different cycle first — an isolated glitch clears itself more often than not. Persistent heating failures are usually either a home electrical supply issue (worth checking if other appliances on the same circuit seem underpowered) or a failed heating element, which needs replacement.
Washer Shaking or Vibrating Excessively
Almost always either an unbalanced load or a machine that isn’t sitting level — check that all four feet are making solid contact with the floor and adjust as needed. If the machine is level and loads are reasonably balanced but it still shakes violently during spin, the shock absorbers or suspension springs may have worn out, which is a parts-and-labour repair rather than a quick fix.
How to Prevent Most Washer Codes From Happening Again
Clean the pump filter every few months, leave the door or lid open between loads so residual moisture can dry out instead of promoting mold and odour, and avoid overloading — a consistently overstuffed drum is one of the more common causes of both drainage complaints and premature suspension wear.
What Our Technicians Check First
On most washer calls, before any parts get tested, we check the supply valves, the pump filter, and whether the machine is level — in that order. That sequence resolves a meaningful share of calls before a single part needs replacing, and it’s worth trying yourself before booking a visit.
Frequently Asked Questions
Can I keep using the washer with an error code showing?
Usually not — most codes stop the cycle rather than let it finish, so you’re better off addressing the cause than repeatedly resetting it.
My code isn’t listed here — what should I do?
Check your owner’s manual for the exact definition, or call us with your model number and the code — we can often explain it before you book anything.
How much does washer repair typically cost?
It depends on the cause — clearing a filter is free, a hose or valve is inexpensive, a pump or suspension repair is more involved. We confirm pricing before any work starts.
Is it normal for a washer to make some noise?
A moderate hum during spin is normal. Grinding, banging, or loud vibration is not, and is worth checking before it causes further wear.
How often should I clean the pump filter?
Every few months for average use — sooner if you notice slower draining or find coins and debris in pockets before washing regularly.
Why does my washer sometimes redistribute the load on its own?
That’s normal behavior — most machines detect an unbalanced load and try adjusting it automatically before starting the spin cycle, which can add a minute or two to the cycle.
Is it bad to run half-empty loads regularly?
Not harmful to the machine, though very small loads can sometimes trigger balance issues since there’s less mass to distribute evenly during spin.
*Same-day service is offered whenever possible and depends on technician availability, parts, and your location within the GTA.