A washing machine error code looks small until the drum stays full, the door stays locked, or wet clothes sit inside for hours. The code is not random. It is the washer’s way of pointing to a fault area, such as water supply, drainage, spin balance, door locking, heating, voltage, or control-board communication.
This guide explains washing machine error codes by brand, including Samsung, LG, Bosch, Siemens, Daewoo, and Hitachi. You get clear code meanings, reset-safe checks, and repair warning signs before you book a technician.
You get 2 practical wins from this guide:
- Read washing machine error codes without guessing.
- Separate reset-safe washer fault codes from technician-level repair codes.
What are washing machine error codes?
Washing machine error codes are diagnostic labels that translate sensor readings into short display codes.
Samsung calls these “information codes” and says they help you understand what is happening when the washer fails to operate. Samsung also notes that, in most cases, the code does not automatically mean a mechanical fault.
A washing machine error-code system reads signals from parts such as:
- Water inlet valve
- Drain pump
- Door lock
- Motor circuit
- Load-balance sensor
- Water-level pressure sensor
- Heating element or thermistor
The useful part is narrow fault direction. A Samsung 4C code points toward the water supply. An LG OE code points toward drainage. A Bosch E18 or Siemens E18/F18 points toward blocked drainage. A Hitachi C02 points toward no water drainage. Those codes do not name every failed part. They name the system area.
For washing machines and washer-dryers, selected spare parts such as door hinges, seals, door locking parts, and detergent dispensers must remain available for 10 years, while professional repairers get access to repair and maintenance information.
How do you read a washing machine error code?
Read a washing machine error code by matching the exact letters, numbers, model series, and visible symptom.
Samsung says some codes differ by model, and users must check the manual when a code is not listed. That matters because one brand can reuse similar code families across front-load, top-load, washer-dryer, and regional models.
Use this 5-step reading order:
- Record the exact code, including letters such as E, F, C, OE, UE, dE, or PF.
- Check the symptom: no fill, no drain, locked door, no spin, leak, heat fault, or power fault.
- Match the brand table, because Samsung 5E and LG OE both point to drainage.
- Confirm the visible cause, such as a kinked hose, closed tap, trapped laundry, or blocked filter.
- Stop testing if the code mentions voltage, leak protection, motor, heater, sensor, or printed circuit board.
The first letter can carry meaning. Bosch and Siemens often use E or F as code families. Samsung uses 4C, 5C, dC, UE, OC, and related variants. LG uses OE, IE, UE, dE, LE, FE, PE, and tE. Hitachi uses C codes such as C01, C02, C04, and C18. Daewoo manuals show IE, OE, UE, LE, E2, E4, E5, E6, and E8 families.
What do the most common error codes mean by brand?
The most common washing machine error codes by brand fall into 6 fault groups:
- Water supply
- Drainage
- Door lock
- Unbalanced load
- Leak or overflow
- Electronic control
This table defines the code, the system area, the safe first check, and the repair trigger. Use the table as a triage tool, not as a substitute for the model manual.
| Brand | Common error codes | Meaning | Safe first check | Repair trigger |
|---|---|---|---|---|
| Samsung | 4C, 4E, E1 | Water supply issue | Open taps, check the hose, and clean mesh filter | The code returns after a 1-minute power reset |
| Samsung | 5C, 5E, E2 | Drainage issue | Drain excess water, clean pump filter, check the hose | Pump noise, no drain, repeated wet clothes |
| LG | OE | Water cannot drain | Straighten drain hose and clean drain filter | OE returns after filter and hose check |
| LG | UE, Ub | Unbalanced load | Rearrange the load and add similar items | Repeated UE on normal mixed loads |
| Bosch | E18, F18 | Drain hose or pump blockage | Check drain hose and clean the pump | Impeller jam, no drain, repeated E18 |
| Bosch | E23, F23 | AquaStop leak protection active | Turn off water tap | Any suspected leak under machine |
| Siemens | E18, F18 | Drain problem | Drain water, check the pump, and check the hose | The code remains after pump and hose check |
| Hitachi | C01, C02, C04 | No fill, no drain, cannot spin | Check tap, drain hose, load balance | Repeated C04 with balanced load |
| Daewoo | IE, OE, UE, LE | Inlet, drain, unbalance, door open | Tap, drain hose, laundry, door close | PCB, valve, motor, lock, or sensor action |
Bosch washing machine error codes
Bosch washing machine error codes use E and F families to identify operating faults.
A Bosch washer stops with E18, F18, E23, F23, H:32, or E:30 style codes. Bosch says ‘E18’ or ‘F18’ links to a blocked or kinked drainage hose and pump cleaning steps. Bosch also says H:32 links to uneven laundry distribution during spin.
Get the meaning by checking the Bosch code list and matching the system area. For E18/F18, inspect the drain hose and pump filter. For E23/F23, Bosch says the AquaStop hose has activated, which means possible leakage, and Bosch tells users to turn off the tap and contact support.
Skip the technician on E18 only when the washer drains after a hose or pump-filter check. Call repair for E23/F23, E80 drive circuit faults, pressure sensor faults, flow sensor faults, or repeated E18 after cleaning.
Samsung washing machine error codes
Samsung washing machine error codes use number-letter groups such as ‘4C’, ‘5C’, ‘dC’, ‘UE’, ‘OC’, and ‘9C’.
You need this section when a Samsung washer stops, locks, drains slowly, fills slowly, or refuses to spin. Samsung says ‘4C/4E’ means a water supply issue, and the water pressure range must sit between 0.5 bar and 8 bar with at least 4 liters per minute from the tap.
Get the meaning by grouping the Samsung code. 4C or 4E means water supply. 5C or ‘5E’ means drainage. ‘dC’ or ‘dE’ means the door is not fully closed. ‘UE’ or ‘UB’ means ‘unbalanced load’. OC, OE, or OF means overflow. Samsung says 5C/5E commonly comes from a blocked filter or kinked drain hose.
Skip repair only when the code clears after a basic check. Call a technician for water heater codes such as 6E, E5, E6, or HE1; repeated motor codes such as 3C or 3E; low-voltage codes that recur; and communication codes such as AC or AE.
LG washing machine error codes
LG washing machine error codes use letter groups such as OE, IE, UE, dE, LE, FE, PE, PF, CE, and tE.
You need this section when an LG washer stops during fill, drain, lock, spin, or heat phases. LG says OE appears when the washer drains slowly or does not drain, and IE means water is not supplied or water pressure is too low. LG gives an inlet pressure range of 14.5 to 116 pounds per square inch on its support page.
Get the meaning by matching the code to the function. “OE” means “drain fault”. “IE” means “inlet fault.” “dE” means the lid or door is not closed correctly. “UE” means the load stayed unbalanced after the washer tried to rebalance. LG says a small “uE” means the washer is still trying, while “UE” after a pause means manual redistribution is required.
Skip repair for PF after a power interruption, UE after a small load, and OE after a confirmed clogged hose. Call a technician for CE over-current, FE overfilling from a likely valve fault, PE water-level sensor fault, tE thermistor fault, and repeated LE motor lock.
Hitachi, Siemens, Daewoo and error codes
Daewoo, Siemens and Hitachi washing machine error codes use different code families, but the system logic stays similar.
Siemens says E18 and F18 are identical faults and mean the washer has detected a drainage problem. Siemens also gives 3 checks: pump, drainage hose, and service support.
Get the meaning by using brand-specific manuals. Hitachi lists C01 as no water supply, C02 as no water drainage, C03 as door open, C04 as cannot spin or dry, and C08 as door open with too much laundry. Hitachi tells users to pause, correct the visible issue, and restart for several C-code conditions.
Daewoo service-manual pages list IE as water inlet error, OE as drain error, UE as unbalance error, and LE as door open error. Daewoo troubleshooting also moves quickly from user checks into part replacement language, including valve inlet, water-level sensor, drain motor, switch door lock, printed circuit board, motor, and thermistor.
Skip repair on Hitachi C01, C02, C03, C04, and Daewoo IE, OE, UE, or LE only after the visible cause clears. Call for repair when the manual points to a PCB assembly, motor, thermistor, leakage, pressure sensor, or lock switch.
Which error codes can you reset yourself?
You can reset washing machine error codes linked to water supply, drainage, door closure, unbalanced load, foam, child lock, tub clean, and power interruption.
Reset-safe does not mean risk-free. It means the first correction stays outside sealed electrical parts.
Use this reset-safe checklist:
- Open both water taps for Samsung 4C, LG IE, Bosch inlet faults, Hitachi C01, and Daewoo IE.
- Straighten the drain hose for Samsung 5C, LG OE, Bosch E18, Siemens E18, Hitachi C02, and Daewoo OE.
- Clean the drain pump filter for Samsung 5C and LG OE after hot water cools.
- Close the door firmly for Samsung dC/dE, LG dE, Hitachi C03/C08, and Daewoo LE.
- Redistribute laundry for Samsung UE/Ub, LG UE, Bosch H:32, and Hitachi C04.
- Restart after a power interruption for LG PF and some Samsung power codes.
Samsung says washing machine buttons can stay disabled for 3 minutes after some information codes appear. That delay can make a cleared fault look unresolved for a short time.
LG says its washer can try to rebalance a load up to 3 times before a UE pause requires manual redistribution. That is why opening the door too early can interrupt a normal correction cycle.
Which error codes need a technician?
Technician-level washing machine error codes involve leakage, voltage, motor circuits, heater faults, sensor faults, door-lock failure, over-current, repeated drainage failure, and printed circuit board faults.
Call washing machine repair when the code returns after the basic reset or when the code points to sealed components. Do not keep cycling a washer with leak protection, a burning smell, a tripped breaker, standing water near the cabinet, or a locked door with water inside.
Use this technician trigger list:
- Call repair for Bosch E23/F23 because Bosch links the code to AquaStop leak protection.
- Call repair for LG CE, FE, PE, and tE because LG links these to over-current, overfill, water-level sensor, and thermistor faults.
- Call repair for Samsung 3C/3E, 6E, HE1, AC, AE, and repeated 9C power codes.
- Call repair for Daewoo E4, E5, E6, E8, E9, H2, H4, and repeated IE/OE after checks.
- Call repair for Hitachi C09, C18, C20, C30, and repeated C04 on a level machine.
The clean repair decision is simple. Reset user-condition codes once. Repeat the code after the visible cause clears, and the washing machine error-code system has moved from guidance into fault evidence.
Before you call home appliances repair, write down the exact code, brand, model number, cycle stage, water level, door state, and any smell, leak, noise, or trip event. That short evidence pack saves time. It also helps the technician separate a blocked filter from a failing pump, a loose door latch from a lock switch fault, and a one-time power cut from a control-board problem.
The code is the starting point, not the repair decision
A washing machine error code gives the first clue, not the final diagnosis. Treat the display as a fault map. Samsung 4C points to water supply. LG OE points to drainage. Bosch E23 points to leak protection. Repeated codes tell a different story. A code that returns after a correct reset often points to a pump, valve, lock, sensor, motor, heater, or printed circuit board fault. Before you call for repair, note the exact code, brand, model, cycle stage, and visible symptom. That small record turns a confusing washer fault into clear repair evidence.
FAQs
Yes, the same code can point to one fault area, but the failed part can differ by model, symptom, and cycle stage.
Restart the washer once after a basic check, but repeated resets can hide leak, motor, heater, sensor, or control-board faults.
A drain error can return when the hose, pump impeller, pressure sensor, drain motor, or control board still cannot complete drainage.
The exact code, brand, model number, cycle stage, water level, door state, and any leak, smell, noise, or breaker trip help with diagnosis
Ahmed Al Mansoori
Ahmed Al Mansoori is a UAE-based home appliance repair specialist with over 12 years of hands-on experience in diagnosing and repairing washing machines, refrigerators, dishwashers, ovens, dryers, and other household appliances across Dubai and Abu Dhabi. He has worked with leading appliance brands and is known for delivering reliable repair solutions, preventive maintenance guidance, and same-day technical support for residential clients. Ahmed specializes in troubleshooting modern smart appliances and energy-efficient systems commonly used in UAE homes.
