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SAMSUNG ddC

Samsung Washing Machine Error ddC: Add Door Not Closed — FlexWash Models

Clear meaning, realistic next steps, and safe guidance without turning the page into a long repair manual.

What it means

On Samsung FlexWash models with a secondary Add Door (the small door for adding garments mid-cycle), the Add Door is not detected as properly closed and locked.

Severity

Medium - some user checks may help, but repeated faults often need service.

Can you fix it yourself?

Partial — start with DIY steps

Most likely cause

Add Door not fully pushed closed after adding a garment

Also displayed as ddC, dC3 on some models.

Estimated time for safe first checks: 5–10 min.

Step-by-Step DIY Fix Guide

  1. SAFETY: No electrical hazard — ddC is a door position indicator.
  2. Open the Add Door fully and check for any clothing caught in the seal or around the latch.
  3. Inspect the Add Door boot seal for debris or deformation.
  4. Close the Add Door firmly until the latch clicks.
  5. If ddC persists after a firm close with no obstructions, unplug for 60 seconds and retry.
  6. If the Add Door latch is visibly broken, the latch or door lock assembly needs replacement.

If the door warning comes back

  • If the door closes normally but the warning keeps returning, the latch or switch path becomes more likely than a simple alignment issue.
  • ddC persists after confirming nothing is caught in the Add Door and the latch clicks when closed

What This Error Means

Error ddC on your Samsung washing machine means: On Samsung FlexWash models with a secondary Add Door (the small door for adding garments mid-cycle), the Add Door is not detected as properly closed and locked. Also displayed as dC3 on some Samsung models. The washer's self-diagnostic system has detected this condition and paused the current cycle.

The most frequent cause is add door not fully pushed closed after adding a garment. Work through the causes and fix steps below in order — most Samsung washer errors are resolved without a service call.

Many cases of ddC can be resolved by the homeowner. The steps below cover the full DIY checks — if they do not resolve the error, a technician is needed.

Samsung front-loader doors require a definite push to latch — a gentle close often leaves the latch just short of engaging. If the door appears closed but dE remains, open it fully and push it closed with firm pressure until you feel and hear the click of the lock engaging.

Most Likely Cause by Symptom

The Samsung washing machine may stop, pause, or refuse to complete the cycle normally.

Likely cause: Add Door not fully pushed closed after adding a garment

Check first: SAFETY: No electrical hazard — ddC is a door position indicator.

The appliance may fail to start because the door or lock state cannot be confirmed.

Likely cause: Item of clothing caught in the Add Door seal preventing full closure

Check first: Open the Add Door fully and check for any clothing caught in the seal or around the latch.

Common Causes

  • Add Door not fully pushed closed after adding a garment
  • Item of clothing caught in the Add Door seal preventing full closure
  • Add Door latch worn or misaligned
  • Add Door lock actuator fault

What Not to Do

  • Do not attempt to open the Add Door during a spin cycle — the door interlock prevents this for safety

Model and Display Variation Notes

Model-family notes

  • Samsung washing machine display wording and code formats can vary by series.
  • If your model behaves differently, check the owner manual before trying any deeper maintenance step.
  • Some models may display the same fault as ddC, dC3.

Display and panel differences

  • Some control panels show this issue as ddC, dC3 instead of only ddC.
  • Panel wording and whether the code appears with letters, numbers, or a longer variant can differ by model family.

Parts, Tools and Service Options

Common parts

  • Add Door latch assembly ($20–$50)
  • Add Door lock actuator ($30–$70)

Manual and model check

Check your exact model and manual before ordering any Samsung washing machine parts.

Service option

Samsung service visit if the warning returns after the basic checks are complete.

Suggestions in this section are organized to support the troubleshooting flow first. Any future affiliate relationships should be disclosed clearly.

When Not to Keep Troubleshooting

ddC persists after confirming nothing is caught in the Add Door and the latch clicks when closed

How to Prevent It Recurring

  • Only use the Add Door during the first few minutes of the wash cycle — Samsung's Add Door is not designed for use during spin or high-temperature cycles

Related Error Codes

Extra notes

  • This page is based on Samsung support material and stays conservative where model-specific guidance may vary.
  • The goal is to help you identify safe first checks before you move into parts, service, or model-specific manual lookup.

Source and model notes

Last reviewed: 2026-04-08

Based on: Based on Samsung support material and edited into consumer-safe guidance for the exact code family on this page.

View Samsung US Official Support

Model coverage note: Samsung washing machine code meanings can vary by series, control panel, and model family, so use this page as a safe starting point rather than a replacement for the model-specific manual.

Important: FixThisError is an independent guide, not the manufacturer. Use your model-specific manual when the panel wording or behavior differs.

Always disconnect power before inspecting appliances. If unsure, contact a licensed appliance technician.