Samsung Dishwasher Error Code OC

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

1. 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.
2. 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.
3. Check spray arms and pump area: Remove and inspect spray arms for obstructions and manually rotate impeller area to ensure it turns freely.
4. 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.
5. 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.
6. 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.
7. Check for water leaks: Look for signs of water on or near electrical components. Dry and clean corroded terminals; replace parts with water damage.
8. Swap or test components if possible: If you have a known-good pump or control board, swapping can confirm the failing component. Otherwise replace suspected part and retest.
9. Update or reset: In rare cases a firmware/control board glitch can cause false OC readings. A full power down or control board reset may help temporarily, but repeated OC means a hardware fault.
10. When in doubt, stop using the dishwasher and call a professional: Electrical faults and repeated overcurrent issues are safety risks and should be handled by an authorized technician.

Maintenance and Prevention Tips

• Clean the filter, sump, and spray arms regularly to prevent debris from jamming the impeller.
• Avoid washing large sharp items that can break and damage pump components.
• Rinse plates to remove large food particles before loading.
• Load dishes according to manufacturer recommendations to prevent spray arm blockage.
• Run a cleaning cycle with dishwasher cleaner monthly to reduce buildup.
• Inspect the door seal and base for leaks and repair promptly to prevent electrical corrosion.
• Keep the area under and around the dishwasher dry and free of standing water.
• Use manufacturer-recommended detergent and rinse aid to reduce residue buildup.
• Check hoses and clamps annually for damage and secure fittings to prevent leaks.
• Avoid using extension cords or improper power connections; ensure the dishwasher is on a dedicated circuit.
• Have wiring and grounding inspected by a qualified electrician if you experience frequent breaker trips.
• Replace worn or cracked hoses and gaskets before they cause internal leaks.
• Schedule periodic professional maintenance if the unit sees heavy or commercial-style use.
• Don’t ignore intermittent grinding or humming noises; investigate promptly.
• Keep the area ventilated and avoid storing chemicals near the dishwasher that could corrode components.

FAQs

Conclusion and Safety Notice

OC codes often point to electrical overloads or motor issues that should not be ignored. Always disconnect power before inspecting internal components and avoid attempting advanced electrical repairs unless you are qualified. If you see water on electrical parts, burning smells, smoke, or repeated OC errors after simple troubleshooting, stop using the appliance and contact a certified Samsung technician or licensed electrician. Incorrect repairs can create shock or fire hazards.

For safe, effective resolution: try basic user steps like cleaning the filter and resetting power, but schedule professional service for suspected motor faults, wiring issues, or control board replacements. A trained technician can perform proper diagnostics, verify current draw, and replace parts safely so your dishwasher returns to reliable, safe operation.