4C (older models show 4E) on a Samsung washer is a water-supply error — the machine started a cycle but didn't get enough water in the time it expects, so it stops. Most of the time it's something simple upstream of the washer, and you can rule those out in a couple minutes. Here's the order a tech checks.
The most common cause: one or both of the hot/cold valves behind the washer got bumped partly closed, so water trickles instead of filling. A single valve off can trigger 4C even if the other is on.
Check it: Reach behind the washer and make sure both the hot and cold supply valves are turned fully open.
There are tiny mesh filters where the fill hoses screw into the back of the washer. Sediment and mineral buildup clog them and choke the fill — very common on older installs or hard water.
Check it: Turn off the valves, unscrew the fill hoses at the washer, and check the little mesh screens inside the inlet ports. Rinse or gently clean out any grit, then reconnect.
A fill hose kinked behind the washer restricts water and throws 4C.
Check it: Pull the washer out gently and straighten any kink in the hoses.
The electric inlet valve on the washer opens to let water in. If it's failed or clogged internally, the washer can't fill even with the supply wide open and clean screens.
Check it: If the valves are open, screens are clean, and hoses are straight but you still get 4C, the inlet valve is the likely part — a tech diagnosis and replacement.
Almost always repair — most 4C codes are free fixes (open a valve, clean a screen), and even a failed inlet valve is an affordable part plus flat labor.
In Middle Tennessee or the Baton Rouge area? We'll come to you, same-day. Anywhere else in the U.S.? Send a 10-second video, a real technician tells you exactly what's wrong for $50 (credited toward the repair), and we ship you the exact part. 24/7 — text, call, or upload anytime.
It's a water-supply error — the washer isn't getting enough water fast enough. Older Samsung models show the same fault as 4E. Start by confirming both supply valves are fully open and the inlet screens aren't clogged.
Open both water valves fully, then turn off the water and check the small mesh screens where the fill hoses connect to the washer for buildup. Clean them, reconnect, and restart. That fixes most 4C codes.
Usually nothing (a valve or a screen clean) or an affordable inlet valve if it failed. Your $50 Quick Check credits toward the repair.