Samsung Washing Machine Error 400
⚡ Quick Answer: The Samsung Washing Machine error code 400 typically indicates a drain pump failure. Users may notice unusual noises during the spin cycle and experie... ✅ DIY Fixable
What Does Error 400 Mean?
The Samsung Washing Machine error code 400 typically indicates a drain pump failure. Users may notice unusual noises during the spin cycle and experience issues with water not draining properly. To troubleshoot, check the user manual for model-specific guidance, ensure the washer is receiving proper water supply, and confirm that the door is securely closed. If the problem persists after a power cycle, further investigation is necessary.
Possible Causes
- Drain Pump
- Wiring Issues
- Control Board Failure
How to Fix Error 400
DIY Fix Check model‑specific documentation and basic conditions
- Consult your exact Samsung washer model’s user manual or service documentation for error code definitions.
- Ensure the washer has proper water supply, door/lid is fully closed, and the cycle was started correctly.
- Power cycle the machine: turn off, unplug for several minutes, then restart.
Technician Only Contact Samsung support for error code interpretation
- Provide the exact washer model and the circumstances in which the code appears.
- Have a technician retrieve service mode or diagnostic codes if available.
- Determine if firmware or control board issues are present using official diagnostic tools.
- If the error persists after basic checks and power cycle
- If the appliance exhibits unusual noise, vibration, or signs of electrical issues
Next step
Choose the next step for 400
Confirm the diagnosis before ordering. An error code can identify the system involved, but it does not prove that a specific part has failed.
Most relevant component to inspect
Drain Pump
Pumps waste water out of the appliance during the drain cycle.
- Typical part-only price
- $35 - $80
- DIY difficulty
- Easy
- Estimated time
- 15-30 mins
Where can I find the model number?
Check the rating label around the door, lid, frame, rear panel, or inside the appliance cabinet. Use the complete model number, including suffixes.
Verify the complete model and part number on the retailer's compatibility page before ordering.
Other parts options
Check related components first; use model search as a fallback.
Model-compatible Washing Machine parts
Enter the complete model number to browse compatible replacement parts. This is a model-based parts search, not a diagnosis that a specific component failed.
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Optional routine care
Maintenance supplies
These products support cleaning or routine upkeep. They are separate from the possible repair components above and are not claimed to fix this error code or symptom.
Washing Machine Cleaner Tablets
Routine tub-cleaning supplies for residue and odor control. They do not repair a mechanical, drainage, or electronic fault.
Braided Washer Inlet Hoses
A maintenance replacement option for visibly worn external fill hoses. Verify thread size, length, and hot/cold connection requirements.
Washer Drain Hose Holder
Helps secure an external drain hose at the standpipe. It does not correct an internal pump or control fault.
Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. Recommendations are based on routine-care relevance, not commission rate.
Technical Specifications
| wattage | 30W |
|---|---|
| component | Drain Pump |
| resistance | 10-20 ohms |
| part_number | DC31-00054B |
| voltage_rating | 120V AC |
Common Questions
What does 400 error mean on Samsung Washing Machine?
Error code 400 usually indicates a drain pump failure, causing water drainage issues.
Can I fix Samsung Washing Machine 400 error myself?
Yes, check the user manual, ensure water supply, and power cycle the machine.
How much does it cost to fix 400 error?
Repair costs vary by model and region; consult a technician for an estimate.
When should I call a technician for 400?
Call a technician if the error persists after troubleshooting or if you notice unusual noises.
Sources & References
Data last verified: 2026-07-22
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