Error Codes

Samsung Washer Error Codes: Complete California Guide — 4E, 5E, UE, DC, dE, OE and Every Code Explained

Your Samsung front-loader or top-loader just stopped mid-cycle and flashed a code. Here is exactly what each code means, what causes it in California’s specific water conditions, what you can fix yourself, and when the code means you need a technician.

📅 September 7, 2026 🕒 14 min read 📌 Error Codes

Samsung is among the most popular washing machine brands in California, particularly in newer construction and condo buildings throughout the Bay Area, LA Metro, and San Diego County. Their front-load WF series and top-load WA series both use an onboard diagnostic system that monitors dozens of sensors and displays alphanumeric error codes when something is wrong.

The challenge: Samsung’s error code documentation was written for the median US water condition of roughly 110–130 ppm. California’s water ranges from 50 ppm (SFPUC Hetch Hetchy in San Francisco) to 479 ppm (Ventura city groundwater). When your Samsung in Mission Viejo shows a 5E drain error, the root cause and the correct resolution are genuinely different from the same code on a machine in Sacramento — because water chemistry changes what’s restricting the pump.

This guide covers every Samsung error code you’re likely to encounter, with California-specific context for the most common ones. Bookmark it for the next time your display shows a code mid-cycle.

How Samsung Error Codes Work

Samsung washers display error codes on the LED panel when sensors detect an out-of-range condition. The code appears, the machine stops or pauses, and a notification may appear in the Samsung ThinQ app (on Bespoke and smart-home models).

Important distinction: Some codes indicate something you can fix immediately (redistribute an unbalanced load for UE); others indicate a component failure requiring professional service (3E motor fault, HE heating element failure). Most of California’s most frequent codes — 5E, 4E, OE — are water-chemistry related and fall somewhere in between: often DIY-resolvable with the right maintenance, sometimes requiring professional descaling.

Older vs. newer Samsung models: Samsung changed their error code naming between generations. Older models (pre-2015 roughly) use letter-number codes like 5C, 4C; newer models show 5E, 4E for the same fault. Both indicate identical issues — the letter just changed. If you have an older machine showing a C suffix where this guide shows E, the cause and fix are the same.

Smart reset first: For any error code that appears without obvious cause, unplug the machine for 60 seconds and restart. This clears temporary electronic glitches from the control board’s memory. If the code returns immediately, the underlying condition is genuine.

Complete Samsung Error Code Reference

The Four Most Common Samsung Error Codes in California — Detailed

5E Drain Error — California’s Most Common Samsung Service Call

The 5E error (shown as SE or 5C on older models) means the machine cannot drain within its expected time window. A 5E that appears consistently on every cycle, rather than occasionally, is almost always a restriction in the drainage path rather than a pump motor failure — though pump motor failure can produce identical symptoms.

In California hard water cities (150–479 ppm): The pump filter accumulates a combination of mineral scale and physical debris (lint, coins, fabric fragments) between cleanings. At 200–280 ppm (Mission Viejo, Encinitas, Newport Beach range), a filter that isn’t cleaned quarterly develops enough scale to restrict drainage within 2–3 months. At 350–479 ppm (Ventura, Thousand Oaks), that timeline compresses to 6–8 weeks. Critically, even after filter cleaning, internal pump housing scale can continue to restrict the pump impeller — this is why 5E errors in California hard water cities often recur within weeks of a filter cleaning that appeared to solve the problem.

In California soft water cities (50–120 ppm: Sacramento, Bay Area EBMUD/SFPUC): The pump filter accumulates only physical debris with minimal scale. Annual cleaning for debris is appropriate. A 5E error after debris cleaning points directly to pump motor failure rather than housing scale — the diagnostic sequence is different.

4E Fill Error — California’s Inlet Screen Problem

The 4E error (old code: 4C) means the machine is not filling with water, or is filling too slowly. The most common cause in California’s moderately hard to very hard water cities is calcified inlet valve mesh screens — not a failed solenoid valve.

The inlet valve is located at the back of the machine where the supply hoses connect. Inside each inlet port sits a small stainless steel mesh screen designed to catch sediment. In California water at 150–280 ppm, these screens develop calcium carbonate calcification on a 12–18 month cycle. At 280–479 ppm, the cycle compresses to 8–12 months. A fully calcified screen restricts flow enough to trigger 4E before the solenoid coil itself fails.

To descale the inlet screens: turn off both water supply valves. Disconnect both supply hoses from the machine rear (have towels ready for residual water). Use needle-nose pliers to carefully pull the mesh screens straight out of the inlet ports. Soak in 10% citric acid solution or undiluted white vinegar for 15–20 minutes. Mineral deposits dissolve and rinse away. Reinstall screens, reconnect hoses hand-tight plus quarter-turn, restore water supply, test with a fill cycle. A 4E that clears after screen descaling — with the solenoid never touched — is the correct diagnosis.

UE / Ub — Unbalanced Load

UE (Unbalanced Error) and Ub are the same fault — the machine detected the drum is too imbalanced for safe high-speed spin and stopped the cycle to prevent vibration damage. This is the most frequent Samsung code that has nothing to do with water chemistry.

Most common causes:

• Single heavy item: A single towel, jeans, or hoodie can form a clump that creates severe imbalance. Wash heavy single items with similar items to distribute mass.
• Mixed heavy and light items: A batch of jeans plus lightweight t-shirts creates uneven weight distribution. Separate by weight category.
• Underfilled drum: One or two items in a large drum have nowhere to balance themselves. Add more items or wash small loads on the mini/small load setting.
• Bedding and towels: Bulky items absorb water unevenly and are the most common UE trigger.

When UE is not about load balance: If a properly distributed, appropriately sized load consistently triggers UE on every spin cycle, the machine’s suspension system is the underlying issue. Worn suspension rods (on top-loaders) or shock absorbers (on front-loaders) allow excessive drum movement that triggers the balance sensor even with a well-distributed load. This requires professional diagnosis and replacement — it’s a mechanical wear failure, not a user error.

DC / dE — Door Won’t Close or Lock

DC and dE both relate to the door. DC means the machine detected the door is not properly closed or latched before starting a cycle. dE is a door lock (interlock) electronic error during a cycle.

Immediate checks for DC:

• Check for clothing caught in the door seal at the bottom — even a thin sock prevents the door from sealing completely
• Inspect the door boot seal for tears or deformations (relevant if the machine has been making noise or showing water around the door)
• Check the door latch on the door itself for visible damage or misalignment
• On top-loaders: confirm the lid is closing fully and that no items are caught under the lid rim

When the door looks closed but the code persists: The door lock assembly has failed. This is an electronic interlock module inside the machine body that confirms the door is locked before allowing cycle operation. When it fails electronically, the machine reads the door as open regardless of actual position. Door lock assembly failure is the most common won’t-start failure on Samsung front-loaders at 5–9 years of use. Replacement cost: $130–$265 with labor. This is also the most commonly misdiagnosed won’t-start failure — incorrectly attributed to control board failure at 2–3× the cost. A working machine that simply won’t start because the door lock failed is not a board problem. Request written documentation of any board test before authorizing board replacement. See our won’t start diagnosis guide.

OE Overflow Error — Stop the Machine Immediately

OE (or OC on older models) means the water level sensor has detected more water than expected in the drum. This is a genuine overfill condition that carries real water damage risk — if the machine continues to fill unchecked, it will overflow onto your floor.

Action: Press Pause or Power immediately. Don’t open the door if the drum has significant water in it. Select Drain & Spin to drain first.

Most common causes:

• Stuck-open inlet valve: The solenoid has failed in the open position, allowing water to continue entering after the fill cycle should have stopped. In California hard water, mineral deposits on the valve seat can prevent the valve from sealing completely.
• Failed water level pressure switch: The pressure switch that tells the machine the drum is full has malfunctioned, so the machine doesn’t know to stop filling.
• Pressure hose blockage: The small hose connecting the pressure switch to the drum can accumulate scale in California hard water, preventing the switch from reading water level correctly.

OE is always a professional repair call. An overflow condition creates water damage risk to floors and subfloors beyond the appliance repair cost. See also: washer leaking guide.

Sud Error — Excess Suds (Almost Always a Detergent Issue)

The Sud error (also shown as 5D on some models) means the machine detected excessive foam in the drum. It pauses the cycle and attempts to dissipate the suds before continuing. This is almost never a mechanical failure.

Causes in California:

• Non-HE detergent: Samsung front-loaders require HE (High Efficiency) detergent — look for the HE symbol on the bottle. Standard detergent produces 5–10× more suds than HE detergent in the same low-water environment.
• Too much HE detergent: The dosage markings on detergent caps are calibrated for national average water hardness (~130 ppm). In California soft water (50–100 ppm), you need 20–30% less than the cap marking. In very hard water (300+ ppm), some detergents require slightly more to counteract the mineral interference with surfactants.
• Detergent residue buildup: Months of over-dosing leaves residue in the drum and dispenser that continues to produce suds from the residue alone. A deep cleaning cycle with a Affresh tablet or citric acid clears the residue.
• Fabric softener in the detergent compartment: Liquid fabric softener is much more prone to excessive foam than detergent. Ensure it’s added to the fabric softener compartment (the symbol with a flower), not the main wash compartment.

Resolution: Let the machine complete its Sud-clearing cycle (it will drain and add water to dilute the foam). Don’t add more water manually. Switch to HE detergent and reduce dose by 20–30%. Run a cleaning cycle with a descaling tablet to clear residue. If Sud errors continue after switching to correct HE detergent at correct dose, the water level pressure switch may be malfunctioning — a professional repair.

Less Common Codes: 3E, tE, LC, bE, 9C1, AE

These codes appear less frequently but are worth knowing:

3E — Motor Tachometer Error

The 3E code indicates a motor speed sensor (tachometer/Hall sensor) fault. The motor isn’t reporting its rotation speed correctly. Occasionally in Palmdale, Lancaster, and other high-temperature Inland Empire garage installations, sustained summer heat (115–130°F garage temperatures) stresses motor electronics and produces 3E codes. If your 3E appears in summer in a garage installation, ventilation improvement may prevent recurrence after repair. Most 3E codes require professional motor or motor control board service.

tE — Thermistor (Temperature Sensor) Error

The tE code means the temperature sensor isn’t reading correctly. The thermistor monitors water temperature during the wash cycle. In California’s hardest water cities, the thermistor can accumulate scale where it contacts wash water, producing false temperature readings. Professional service required, but mention your water hardness to the technician.

LC / LC1 — Leak Sensor

LC codes mean the base tray leak sensor has detected water in the machine base. This is a genuine leak condition. Stop the machine immediately. In California hard water, check for pump housing scale-induced micro-cracks if the machine is older than 7 years. See our leaking washer guide.

bE — Button or Panel Error

bE means a button on the control panel is stuck or the panel is registering a continuous press. Check for buttons that feel physically stuck. If no button is physically jammed, the control panel has failed and requires replacement.

California Water Hardness and Samsung Error Code Frequency

FAQ — Samsung Washer Error Codes