Samsung Dishwasher Error Code 9C1

The 9C1 code means the dishwasher has detected a power supply voltage error, specifically that the incoming voltage is either too high or too low. When this happens, the dishwasher stops all drive functions and the display changes to a paused state to protect the appliance. The first step is to check that the wall outlet is supplying the correct 120V AC.

No, you should not continue using the dishwasher while this error is active. The dishwasher has paused itself because abnormal voltage poses a risk of damage to internal components and could represent an unsafe electrical condition in your home. Resolve the voltage issue before resuming operation.

If the problem is limited to the household circuit or outlet, costs may range from nothing to a modest fee for an electrician to inspect and repair wiring or replace a breaker. If the internal power supply board requires replacement, parts and labor costs typically range from $150 to $350 depending on the service provider and part availability. A main control board replacement can push costs higher, often in the $200 to $450 range including labor.

Start by measuring the voltage at the dishwasher's wall outlet using a multimeter to confirm it is at or near 120V. Check your home's circuit breaker for the dishwasher circuit and inspect outlet connections for looseness or corrosion. If line voltage is normal and the error persists, the internal power supply board or main control board may need to be tested and potentially replaced by a qualified technician.

A reset may temporarily clear the code, but if the underlying voltage problem is not corrected, the 9C1 error will return once the dishwasher attempts to run again. Resetting alone is not a fix, it only clears the stored fault. The root cause, whether in the household circuit or inside the dishwasher, must be identified and corrected.