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Error code reference

Samsung Dishwasher Error Code dC

Door open detected during operation

Samsung codesSamsung dishwasher codes

Door open detected during operation - the door was opened while the dishwasher was running.

First step from the service manual

Press the Start Key to turn the check code display off; close the door within 3.7 seconds to restart operation.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What dC means on a Samsung dishwasher

The dC error code on a Samsung dishwasher indicates that the door was opened while the unit was actively running a wash cycle. The dishwasher monitors door position continuously through a door latch switch assembly, and when that switch signals an open state mid-cycle, the control board immediately halts operation and displays dC to alert the user. This is a protective interrupt, not a component failure in most cases, and it is designed to prevent water from spraying out of an open door and to stop the wash pump and heating element from running without the door sealed.

The most straightforward resolution involves pressing the Start key to clear the code from the display, then firmly closing the door within 3.7 seconds. If the door is latched properly within that window, the dishwasher will resume the cycle from where it paused. Missing that 3.7-second window may require restarting the cycle manually from the beginning depending on the cycle state.

If the dC code appears without the door being physically opened, the problem shifts from user action to a hardware fault. The door latch switch or its wiring harness may be sending a false open signal to the control board. A worn latch mechanism that fails to hold the door firmly against the tub gasket, a damaged door switch, or a loose wiring connection at the switch can all cause the board to interpret the door as open when it is actually closed. In these cases, the code will recur repeatedly even when the door appears shut.

Source: manufacturer service documentation.

Common causes of dC

  1. 01

    User opened the door mid-cycle

    Wiring / connection

    The most frequent trigger is simply opening the door during an active wash or rinse cycle. Pressing Start and closing the door within 3.7 seconds will clear the code and resume operation.

  2. 02

    Worn or misaligned door latch

    Part replacement

    A door latch that no longer engages firmly can allow slight movement that the latch switch reads as an open-door event. Inspect the latch for visible wear, cracks, or misalignment with the strike on the tub frame.

  3. 03

    Faulty door latch switch

    Part replacement

    The door latch switch itself can fail and send a false open signal to the control board even when the door is fully closed. If the latch mechanism looks intact but the code recurs, the switch should be tested for continuity.

  4. 04

    Loose or damaged wiring at the door switch

    Wiring / connection

    The wiring harness connecting the door latch switch to the control board can develop loose connectors or chafed insulation, causing intermittent false signals. Inspect the connector at the switch and trace the harness for visible damage.

  5. 05

    Door gasket preventing proper closure

    Wiring / connection

    A warped, bunched, or debris-clogged door gasket can prevent the door from seating fully against the tub, which may stop the latch switch from registering a fully closed position. Clean the gasket and check it for deformation.

See the test procedure for each cause

Frequently asked questions about dC

What does dC mean on a Samsung dishwasher?
The dC code means the dishwasher detected that the door was opened while a cycle was in progress. The control board halts all operation when the door latch switch signals an open state to prevent water from spraying out and to protect the pump and heating element. It is a protective pause, not necessarily a sign of a broken part. If the door was not intentionally opened and the code keeps returning, a faulty latch or switch may be the cause.
How do I fix the dC error on my Samsung dishwasher?
Press the Start key to turn off the code display, then firmly close the door within 3.7 seconds to allow the cycle to resume. If the code clears and the dishwasher runs normally, no further action is needed. If the code reappears without you opening the door, inspect the door latch assembly, door latch switch, and the wiring harness connected to the switch for wear, damage, or loose connections.
Is it safe to keep using my dishwasher when the dC code appears?
The dishwasher stops operation automatically when the dC code triggers, so there is no immediate safety risk from the code itself. However, if the code is appearing because the door latch is failing to hold the door shut, running the unit repeatedly could eventually allow water to leak out during a cycle. It is best to confirm the latch is functioning properly before continuing regular use.
Will resetting the dishwasher clear the dC code?
Pressing the Start key clears the code display and, if the door is closed within 3.7 seconds, resumes the cycle. A full power reset by unplugging the unit or tripping the circuit breaker can also clear the code, but if the underlying cause is a faulty latch switch or wiring issue, the code will return once the next cycle begins. Resetting addresses the display, not the root hardware problem.
How much does it cost to repair a Samsung dishwasher with a dC error caused by a bad door latch?
If the issue requires replacing the door latch assembly or door latch switch, parts typically range from around $15 to $60 depending on the specific component. Professional labor to diagnose and replace the latch or switch generally adds $75 to $150 or more depending on your location and service provider. If the wiring harness needs repair or replacement, costs can vary further. Diagnosing the specific failed component first will help narrow down the total repair expense.

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