Samsung Dishwasher Error Code dC — What It Means & How to Fix It

What Does This Error Mean?

The dC error on a Samsung dishwasher means the door is not fully closed or the door latch is not engaging correctly. Samsung dishwashers will not start — or will stop mid-cycle — if the door latch switch does not confirm the door is properly shut. This is a safety feature that prevents the machine from running with an open or poorly sealed door. Most of the time dC is caused by something physically blocking the door, a worn latch, or a misaligned door.

Affected Models

Samsung DW80R9950UG
Samsung DW80T5430US
Samsung DW80K5050US
Samsung DW80J3020US
Samsung DW80CG5451SR

Common Causes

A dish, utensil, or large pot is sticking out of the rack and physically blocking the door from closing fully
The door latch mechanism is worn or broken and no longer clicks firmly into the door catch
The door catch (the part on the tub that the latch hooks into) is damaged or bent out of alignment
The door latch switch has failed electrically and no longer sends the 'closed' signal to the control board
The dishwasher is not level, causing the door to sit at an angle that prevents the latch from aligning properly

How to Fix It

Open the dishwasher and check if anything is blocking the door from closing. Look at the top rack especially — tall cups, large cutting boards, or pot lids sometimes lean back and hit the door. Rearrange the load so everything is within the rack boundary and try closing the door again.

This is the most common cause of dC. Take a moment to visually scan every rack and make sure nothing sticks past the door plane.
Close the door firmly with a solid push until you hear and feel the latch click. Some Samsung models require a firm push — a gentle nudge is not enough. Make sure you are not pushing at the top corner only; push from the center of the door.

If the door feels unusually stiff to close, or feels like it is bending rather than latching, the hinges or door frame may need adjustment.
Inspect the latch mechanism visible at the top of the door and the matching door catch on the tub frame. Look for any cracked plastic, bent metal, or visible damage. Press the latch tongue in and out by hand — it should spring back firmly. A latch that feels loose or does not spring back is worn and needs replacement.

Replacement latch assemblies for Samsung dishwashers are available on Amazon and appliance parts sites. Search your model number plus 'door latch assembly'.
Check that the dishwasher is level. Open a cabinet door next to the dishwasher and place a small level on the dishwasher door frame. If the machine is tilted side to side or front to back, the door will not align properly with the latch catch. Adjust the front leveling feet by turning them clockwise to raise or counterclockwise to lower.

Even a slight tilt of 1-2 degrees can cause the latch to miss the catch. Leveling is free and takes five minutes.
If the door closes and latches physically but the dC error still appears, the latch switch may have failed electrically. The switch is the small sensor inside the latch assembly that tells the control board the door is closed. Test it with a multimeter — it should show continuity when the latch is engaged. Replace the latch switch if it does not.

On most Samsung models, the entire latch assembly is replaced as one unit — the switch is not sold separately.

When to Call a Professional

dC is usually something you can fix yourself. If the latch is physically broken or the latch switch has failed electrically, a replacement latch assembly costs $20-$50 for the part. A technician charges $75-$150 to diagnose and replace the latch. If the door itself is warped or the hinges are bent, a technician is needed to assess whether repair is practical.

Frequently Asked Questions

Why does dC appear mid-cycle and not just at the start?

The dishwasher continuously monitors the door latch switch throughout the cycle. If the door is bumped open slightly — or if a failing latch gives out under vibration — the machine will stop and display dC. This is normal safety behavior. If dC appears mid-cycle regularly, the latch is wearing out and will need replacement soon.

What is the difference between dC and dC2?

Both codes relate to door latch problems. dC generally means the door is not detected as closed at all. dC2 on some Samsung models indicates a secondary door closure sensor issue. The diagnosis and fix steps are very similar for both codes. Check your model's service manual if you need to distinguish between the two.

Can I force the dishwasher to run with the door ajar?

No — and you should not want to. Running a dishwasher with the door not fully latched will cause water to spray out into your kitchen. The dC error is protecting your floor and cabinets. Fix the latch before running the machine.