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Samsung Dishwasher CE / AC Error Code
Communication error between boards. Here is what it means and how to clear it, easiest fix first.
The control panel and the main control board aren't communicating properly. A loose or damaged connection between them, or a board fault, is usually behind it.
US and Canada: CE. Australia: AC and CA, both for a communication fault between the main and sub control boards. On UK models, AC is described as the dishwasher powering on but not starting a cycle (often after the door was opened mid-cycle or the unit was moved), and AC6 as an electronic lockout where Start does nothing.
How to fix Samsung CE / AC
Power cycle the dishwasher
Switch the dishwasher off at its circuit breaker (or unplug it) and wait about 1 minute. Restore power and start a fresh cycle. If the code clears and stays away, it was likely a one-time glitch.
Try a longer power-off
If the code comes straight back, switch off the breaker or unplug the dishwasher for about 10 minutes before trying again.
When to call a technician
If the code persists, request service. Do not open the control panel or check wiring yourself.
Parts that commonly cause CE / AC
- Main control board
- Control panel (user interface board)
- Wire harness
Order parts by your exact model number so they fit.
Other Samsung dishwasher codes
- 4C / 4ENot enough water coming in
- 5C / 5E / SC / SEDishwasher is not draining
- OC / 0C / OEToo much water in the tub (overfill)
- LC / LELeak detected
- 1E / IEClogged filter or overheating (depends on model)
- HC / HEHeater or overheating error
- tE / tCTemperature sensor error
- 3CWash pump error
- 3EIncoming water too hot (US) or pump error (UK/AU)
- 9E / 1CLow water level
- 7E / 7CWaterwall reflector blocked or misplaced
- bE / 6E / 6CStuck button
- PC / PEZone Wash or Half Load error
- 9C1 / 9E1 / UCPower supply problem
- DCDoor not closed properly
- APWi-Fi setup mode (not a fault)
Frequently asked questions
What does CE / AC mean on a Samsung dishwasher?
The control panel and the main control board aren't communicating properly. A loose or damaged connection between them, or a board fault, is usually behind it.
Can I fix Samsung CE / AC myself?
Only the basic checks. You can safely try the steps above, but CE / AC usually points to a part or fault that needs a technician.
What if CE / AC keeps coming back?
A code that returns after a reset and the checks above usually means a part is wearing out. Note when CE / AC appears (which cycle, how often) and have your model number ready; it helps a technician bring the right part on the first visit.
Last reviewed 2026-10-19. Codes and steps can vary by model; check your owner's manual.