Samsung Dishwasher OC Error: Water overflow detected
If your Samsung appliance is showing this error, you’re dealing with a samsung dishwasher oc error. Here’s everything you need to know about diagnosing and fixing this issue. Samsung oc error code — here is what you need to know. What Does Error Code OC Mean on a Samsung Dishwasher? Error code OC (also displayed […]
No
DIY Fixable
From $180
Typical Repair Cost
60-120 min
Pro Repair Time
Quick Assessment
Answer to continue safely
Is it safe to keep using?
No. Do not operate the dishwasher while the OC error is active. Water overflow can damage kitchen flooring, cabinets, and subfloor. A stuck inlet valve can flood the kitchen even with the dishwasher turned off. Keep the supply valve closed until repaired.
Can I reset the code?
No. While power cycling clears the display, the underlying valve or backflow issue will cause immediate recurrence. The root cause must be fixed before the dishwasher can be safely operated.
When to stop immediately?
Stop if you notice: Water is actively leaking onto the kitchen floor, Water enters the tub even with the dishwasher turned off.
Symptoms You May Notice
Water level is visibly high in the tub
Opening the dishwasher reveals water near or above the door seal level, far higher than normal operating fill.
OC or 0C on display with beeping
The control panel shows the overflow error, often accompanied by an audible alarm.
Water leaking from the door bottom
Excessive water in the tub overflows past the door gasket, dripping onto the floor in front of the dishwasher.
Drain pump running continuously
The dishwasher activates emergency drain pumping to remove excess water, running the pump longer than normal.
Possible Causes
Stuck water inlet valve
The solenoid valve fails in the open position, continuously allowing water into the tub even when the control board commands it closed.
Requires ProfessionalDrain hose backflow
Without a proper high loop or air gap, water from the sink drain can siphon back into the dishwasher tub, especially when the garbage disposal runs.
DIY PossibleMalfunctioning float switch
The mechanical float at the bottom of the tub can stick in the down position, failing to trigger the overfill shutoff.
Requires ProfessionalSafe Checks You Can Do
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1
Close the water supply
Immediately turn off the dishwasher supply valve under the kitchen sink. Turn off the dishwasher breaker.
If you cannot reach the supply valve quickly, turn off the main water supply to the house.
-
2
Check the drain hose high loop
Open the cabinet under the sink and check the drain hose routing. The hose must rise to near the top of the cabinet (high loop) before descending to the disposal connection.
Secure the high loop with a cable tie or hose clip to the underside of the countertop.
When to Call a Professional
Contact a qualified technician if:
- Water continues entering the tub after the supply valve is closed (backflow issue)
- The inlet valve does not click shut when the breaker is turned off
- OC appears within the first minute of every cycle start
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
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