The 3C code on a Samsung dishwasher points to the wash pump or its motor circuit. The control board expects a specific response from the pump motor during the cycle, and 3C appears when that feedback does not match what it’s programmed to see.
Common reasons for 3C
- A wash pump motor that is drawing too much current or has failed to start when commanded
- Debris — a piece of glass, a bottle cap, or bone fragment — jammed in the pump impeller
- A wiring connector at the pump that has loosened from vibration over time
- A control board that is sending the start signal but not receiving the expected motor response
Before you call for repair
- Unplug the dishwasher or shut off its breaker, then check for any hum or clicking from underneath the unit when someone briefly restores power
- Remove the lower filter assembly and look into the sump opening for visible debris caught in the pump inlet
- Check that the dishwasher has not been running with the water supply valve partly closed, which can strain the pump under low flow
- Note whether the code appears immediately on start or partway through the wash, since that timing can help a technician narrow down the problem
A pump blocked by a small object is the easiest scenario to resolve, since clearing the obstruction alone often clears the code. If the motor itself has failed electrically, or the board is not communicating with it, that typically requires component-level testing with a multimeter rather than guesswork, since a pump motor draws enough current to be worth diagnosing properly before parts are ordered. Repeated 3C after clearing visible debris usually means the motor or board connection needs a closer look.
Get 3C diagnosed correctly with our dishwasher repair service.
This content is independent and not affiliated with, endorsed by, or sponsored by Samsung Electronics.
