Samsung ddC: The Add Door is not detected as closed and locked.
Samsung's washer code list says ddC (also shown as dC3) is an Add Door error: the Add Door is not detected as closed and locked.
Source: Samsung washing machine information and error codes, last updated by Samsung 2024-09-04; read 2026-10-17. 3 owner checks listed.
Fault isolation, in Samsung's order
- Owner check from Samsung's page
- Observation Samsung asks you to make
- Request service: technician only beyond here
- Code should clear
The checks, with Samsung's detail
- 1Make sure the latch is secure
Samsung lists this first.
- 2Check nothing is caught in the Add Door
The small door in the main door, on models that have one.
- 3Make sure the Add Door is closed
Samsung lists this as the last owner step.
- Add Door or latch damaged?
Where to stop
Samsung's list says to request service through its Support Center if the code cannot be corrected, or if the Add Door or its latch is damaged.
Not covered here, on purpose: The Add Door latch, its switch and its wiring. Read when to stop and call a technician.
Same code, different meaning on other brands
None of the other brands in the verified set (Bosch, LG, Whirlpool) uses ddC or dC3 on the official pages read for this site. If your display shows ddC on a different brand, do not apply these checks; use the lookup or that brand's own support page.
Same symptom on other brands
- F5 E2Whirlpool washer: The door is not locking properly.
- dELG washer: The washer door did not lock.
- dCSamsung washer: The door is not detected as closed and locked.
- F22Whirlpool washer: A front door lock issue.
- F5 E1Whirlpool washer: A door switch problem.
- F5 E3Whirlpool washer: The door is not locking properly.
Other Samsung codes here
- 4CSamsung washer: Water is not entering the washer correctly.
- SUDSamsung washer: Too many suds: the washer pauses, then continues on its own.
- 1ESamsung washer: Moisture was detected where it should not be, or the sensor is faulty.
- 4C2Samsung washer: The cold supply water is extremely hot, usually swapped hoses.
- 5CSamsung washer: The washer is not draining at the correct speed, or not at all.
- E2Samsung washer: A panel button is stuck or continuously pressed.
- 9C1Samsung washer: The electrical supply to the washer is irregular.
- dCSamsung washer: The door is not detected as closed and locked.
That is 8 of the 14 Samsung washer codes verified here. The rest, with every display variant in one table, are on Samsung washer error codes.
Provenance
| Official page | Samsung washing machine information and error codes |
|---|---|
| Page URL | https://www.samsung.com/us/support/troubleshoot/TSG10000997/ |
| Manufacturer's last-updated date | 2024-09-04 |
| Read on | 2026-10-17 |
| Owner checks on the page | 3 |
| Service instruction | The manufacturer's own |
| Technician review | Not yet reviewed by an appliance technician. Model-specific pages are not built until that review happens (see /methodology/). |
| Record | /data/codes.json, id samsung-washer-ddc |