What the Samsung Dishwasher OC Error Means
The Samsung dishwasher error code OC typically indicates an overcurrent or motor overload condition detected by the appliance control board. When the control detects that a motor, pump, or related electrical component is drawing excessive current or encountering an electrical fault, it will display OC to protect the unit from further damage or an electrical hazard. OC can appear during wash, drain, or pump operation and often forces the cycle to pause or stop entirely.
Why this matters: an OC condition can cause incomplete washes, longer or stalled cycles, failure to drain, or failure to spray. In some cases, continued attempts to run the machine while an OC condition exists can create safety risks such as overheating components, burning smells, tripped breakers, or even smoke. Users may notice louder-than-normal motor noise, sudden stops mid-cycle, or repeated OC codes after a reset.
Common Causes
- Blocked or jammed circulation pump impeller (debris or broken glass)
- Faulty circulation or drain pump motor drawing excessive current
- Shorted wiring or loose electrical connectors to motor or control board
- Failing motor capacitor or starting device (if fitted)
- Damaged or failing main control board (PCB) incorrectly sensing overcurrent
- Water intrusion causing short circuit or corrosion on electrical components
- Overloaded or severely unbalanced load causing mechanical bind on spray arms or pump
- Faulty heating element or thermal fuse causing abnormal current draw in some models
Troubleshooting Steps
- Power reset: Turn off the dishwasher at the breaker or unplug it for 1 to 5 minutes to clear the code. Restore power and try a short cycle to see if OC returns.
- Inspect filters and sump: Remove the bottom rack and clean the filter, sump, and strainer of food debris, glass, or foreign objects that could jam the impeller.
- Check spray arms and pump area: Remove and inspect spray arms for obstructions and manually rotate impeller area to ensure it turns freely.
- Listen for motor noise: Run a short diagnostic or drain cycle and listen. Grinding, humming, or no sound may indicate a failing motor or jam.
- Inspect wiring and connectors: With power off, check the wiring harness to the circulation pump, drain pump, and control board for loose, burned, or corroded connectors.
- Test the pump motor: If you have a multimeter, verify motor windings for continuity and check for short to chassis. Compare readings to service manual specs.
- Check for water leaks: Look for signs of water on or near electrical components. Dry and clean corroded terminals; replace parts with water damage.
- Swap or test components if possible: If you have a known-good pump or control boar