The **AC6** display on a Samsung dishwasher points to **communication / electronic lockout error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. A display code is evidence from the control system, not a component test result. That distinction matters because a connector, supply condition, obstruction, or feedback signal can mimic a failed component. The recorded display form is **AC6**. Search normalization stores it as **AC6** while preserving the characters a homeowner actually sees.
Reviewed by Ethan Mercer · Last reviewed August 17, 2026
Written by
Ethan Mercer Appliance Repair Content SpecialistPublished August 17, 2026Updated August 22, 2026Technically reviewed August 17, 2026
Content status:
Verified
Error codeAC6
ApplianceDishwasher
Quick answer
Communication / electronic lockout error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so AC6 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
The **AC6** display on a Samsung dishwasher points to **communication / electronic lockout error**. Treat it as a diagnostic direction rather than a parts order: operating conditions, wiring, sensors, actuators, and control electronics can overlap. A display code is evidence from the control system, not a component test result. That distinction matters because a connector, supply condition, obstruction, or feedback signal can mimic a failed component. The recorded display form is **AC6**. Search normalization stores it as **AC6** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
When the AC6 condition is present, the appliance may refuse to start or continue a cycle.
One clue that supports the AC6 diagnosis is that a door, lid, divider, or latch can not be recognized as closed or locked.
While AC6 is active, the code can return immediately when the appliance reaches a door-safety verify.
One clue that supports the AC6 diagnosis is that aC6 appears during the dishwasher function associated with communication / electronic lockout error.
Depending on the exact model, the cycle can stop, drain, fail to fill/heat, or repeat a stage.
Why it happens
Possible causes
varies by model/region — cross-region baseline — Communication / electronic lockout error
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
A safe owner-level check is to open and close the door or lid firmly without forcing it.
To rule out an accessible cause, remove clothing, racks, cookware, packaging, or debris that can interfere with closure.
As an external check for AC6, verify the visible latch/strike area for obstruction or damage without bypassing the safety interlock.
To rule out an accessible cause, if water is trapped in a washer or dishwasher, resolve the drain condition before trying to force the door open.
Before opening any service area, record the code before resetting.
With AC6 recorded, check water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Safety takes priority over clearing AC6. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches.
Get help
When to request repair service
Request service if the door closes normally but the code returns, the latch will not release safely, or diagnosis requires testing the interlock, wiring, or control circuit. In a service visit for AC6, model-specific testing should follow the communication / electronic lockout error circuit rather than treating the code as proof of one failed part.
Book your repair
Seeing this code on your Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Resetting can clear a temporary state, not a persistent issue. If **AC6** comes back, preserve the code and move to the safe checks or model-specific service path.
Do not keep operating the appliance through a hazardous symptom just to see whether **AC6** clears. If there is heat, water, electrical, gas, or food-safety risk, stop and arrange diagnosis.
The code alone is not enough to justify a part. **AC6** should narrow testing to the affected function; the final cause still has to be verified on the exact model.
The same-looking code can be reused on another Samsung appliance family or reformatted by region/model year. Match the appliance type and exact model before applying a meaning. This page therefore keeps **Dishwasher AC6** separate from same-looking codes used by other Samsung appliance families.
