The Samsung washer 4C code means water isn’t entering the washer correctly. Samsung groups it with 4E, nF and 1 4C as a not-filling error. Start with the hoses: Samsung says a missing hot-water connection can trigger 4C even when you’re running a Cold cycle.
Most 4C fixes are free. You’re checking hoses, valves, two small filters and, oddly enough, the drain hose. Parts come last.
What the Samsung washer 4C code means
On Samsung’s US error code page, 4C sits under Not Filling Error. Your washer opened its water valves and didn’t see the water arrive the way it expected.
The exact code on your display matters. 4C2 looks almost the same and means something else, so check every character before you go further.
I always pulled the tech sheet before I trusted any code chart. You’ll find it behind the kick plate, in the console or on the back panel, and it carries the valve and wiring details for your exact model.
Check both hoses, even on a cold wash
Pull your washer forward so you can reach the back. Then work through Samsung’s supply checks in this order.
- Hot hose to the hot inlet, cold hose to the cold inlet.
- Both hoses connected, with no bends or kinks along the run.
- Both water valves on the wall turned all the way open, and left open.
- No Flood Safe hoses. Samsung puts them on its don’t-use list for this error.
The second line trips up a lot of people. If you only hooked up the cold side because you wash everything cold, Samsung says the missing hot connection can still set off 4C.
Does a half-open valve count? It can. The Samsung UK page blames low water pressure or a low flow rate for most of these errors, and it gives a working range of 0.5 to 8 bar.
The drain hose rule on a fill code
This one surprises people. Samsung’s 4C checklist includes the drain hose, and it wants the end pushed 6 to 8 inches into the drain pipe, no kinks. On models with blinking-light displays, Samsung caps it at 6 inches.
Don’t remove the screw on the back that holds the drain hose in place. If it’s already gone, Samsung says any screw that fits will do. If the hose holder itself is missing, the washer needs a repair.
Then reset the control. Unplug the washer or switch off its breaker for one minute, restore power and try another cycle.
Clean the inlet mesh filters
Still 4C? Samsung’s next step is the small mesh filters where your hoses meet the washer. Debris collects there and chokes the flow.
- Turn off both water valves.
- Disconnect the inlet hoses from the washer and check the connections for damage.
- Pull the mesh filters out. On some models they sit behind an L-shaped arm on the washer side.
- Rinse them under running water until you can see clearly through the mesh.
- Push them back in and reconnect the hoses, washer end first, then the wall end.
- Open both valves fully and check every joint for drips.
Samsung’s UK page adds one more place to look. A blocked detergent dispenser drawer can occasionally throw 4C, so slide yours out, clear any buildup and put it back.
4C2, 5C and OE are different codes
Samsung reuses similar characters across its washer codes, and each one sends you somewhere different.
4C2 (also 4E2, CE, 14C2 or nF1) means the cold supply is coming in extremely hot. Most often, your hoses are swapped. Match blue to blue and red to red, and Samsung says this code doesn’t point to a needed repair.
5C, 5E, nd, SE and SC mean the washer can’t drain. OE and 0E mean it overflowed. If you came here from an LG, its OE code is a drain error, so the brands don’t share meanings.
When 4C keeps coming back
Some 4C errors come and go. One Samsung owner described a front loader about seven years old that threw the code a few minutes into a cycle, then finished the next load after a restart.
“So far I’ve replaced the entire inlet solenoids which includes new mesh screens. The pressure switch, and the pressure switch hose, the drain pump and the secondary drain pump”
– r/appliancerepair, February 2026
It’s a long list of parts for a fill code. A commenter on the thread suggested a free check first: run each water line into a 5-gallon bucket and compare the flow. If one side runs weak, hard water may be choking that valve. The same commenter said 4C is normally not a main board.
If both lines run strong and the screens are clean, the inlet valve is next. The iFixit 4C guide has you take off the top panel, reseat each valve harness and meter the valve coils with a multimeter set to ohms.
That guide treats 500 to 1,500 ohms as normal and says each coil should read about the same. It’s transcribed from a repair video, not a Samsung manual, so check your tech sheet before you trust the range. An open reading (OL) means a bad coil.
The guide also lists a live 120-volt test at the valve. I’d skip that one unless you’re comfortable working inside a powered washer, and look at the safety tools before you open the cabinet at all.
If 4C persists after the hoses, valves, filters and drain hose all check out, Samsung’s advice is to request a repair. Don’t keep buying parts. The owner of that older washer had already replaced half the water path without a fix.
Both hoses on, both valves fully open, no Flood Safe hoses, clean screens and a drain hose 6 to 8 inches down. Get those five right, and a 4C that still appears is Samsung’s cue to book the repair. For other codes on your display, see the full Samsung washing machine error codes list.
