For the Samsung Dishwasher families covered by the source set, **9C2** means **low / unstable voltage error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **9C2**. Search normalization stores it as **9C2** 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 code9C2
ApplianceDishwasher
Quick answer
Low / unstable voltage error.
Model compatibility: Samsung can reuse or reformat codes across series and model years, so 9C2 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
For the Samsung Dishwasher families covered by the source set, **9C2** means **low / unstable voltage error**. The first useful step is to preserve the exact characters and model number before power cycling the appliance. The exact stage when the code appears can be as important as the characters themselves. Note whether it happens at startup, during fill, heating, cooling, draining, spinning, drying, or after a power event. The recorded display form is **9C2**. Search normalization stores it as **9C2** while preserving the characters a homeowner actually sees.
Signs
Symptoms you may notice
9C2 can be accompanied by this pattern: the appliance can stop, restart, or refuse a high-load function.
Depending on the exact model, the code can appear after a surge, brownout, outage, incorrect supply, or frequency problem.
One clue that supports the 9C2 diagnosis is that some models preserve the display even when one required power leg or voltage range is abnormal.
9C2 can be accompanied by this pattern: 9C2 appears during the dishwasher function associated with low / unstable voltage error.
9C2 can be accompanied by this pattern: 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 — Low / unstable voltage 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.
For 9C2, start by doing this: confirm the breaker has not tripped and the appliance is connected as specified by Samsung.
Before opening any service area, if the event followed an outage or surge, perform only the documented one-time power reset.
To rule out an accessible cause, do not perform live mains-voltage measurements unless qualified.
For 9C2, start by doing this: stop if breakers trip repeatedly, plugs/outlets overheat, or there is arcing.
For 9C2, start by doing this: record the code before resetting.
Before opening any service area, verify water supply, drain path/filter, door, detergent/suds, and visible leaks only when relevant.
Important safety warning. Stop use for active leakage near electrical parts, burning smell, or repeated breaker trips. Do not defeat leak or door-safety switches. For 9C2, stop troubleshooting immediately if the symptom crosses into a safety hazard rather than a normal diagnostic condition.
Get help
When to request repair service
Persistent power/voltage codes need the household supply and appliance power/control circuits checked safely before parts are replaced. In a service visit for 9C2, model-specific testing should follow the low / unstable voltage 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 **9C2** comes back, preserve the code and move to the safe checks or model-specific service path.
Short owner-accessible checks may be reasonable when the appliance is safe. Persistent **9C2**, worsening performance, or any electrical/water/heat hazard is a reason to stop use.
Not automatically. Samsung error codes are diagnostic indicators, not part numbers. Confirm the circuit around **9C2** before replacing anything.
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 9C2** separate from same-looking codes used by other Samsung appliance families.
