Samsung OC Error Code | Fast & Reliable Repair

Error Code Explained

What Does the Samsung OC Error Code Mean?

The OC error code on a Samsung dishwasher (also displayed as OE) indicates an overflow condition — the water level in the tub has exceeded the maximum allowed level. Samsung dishwashers immediately halt the cycle and attempt an emergency drain when OC is triggered.

OC almost always points to a water inlet valve that is not fully closing when it receives the shutoff signal. Instead of shutting off, the valve continues to allow water into the tub, eventually triggering the overflow sensor.

Root Causes

Common Causes of the Samsung OC Error Code

1

Failed Inlet Valve (Stuck Open)

The water inlet valve solenoid fails in the open position, allowing water to continue entering the tub after the control board sends the close signal. This is the primary cause of OC.
2

Failed Water Level Sensor

The pressure switch or flow sensor that monitors tub water level fails, providing incorrect readings that allow overfilling even with a correctly functioning inlet valve.
3

Blocked Pressure Sensor Port

The port or tube connected to the water level pressure switch clogs with food residue, causing inaccurate level readings.

Step-by-Step Guide

How to Troubleshoot the OC Error Code

⚠️

Safety First: Always disconnect the Dishwasher from power before inspecting any internal components. Do not attempt electrical repairs. If in doubt, call a certified technician.

1

Manually drain the dishwasher

Turn off the water supply valve. Start a Cancel/Drain cycle. If OC prevents normal operation, bail remaining water from the tub manually before inspection.
2

Watch the fill phase carefully

After clearing the tub, restart the dishwasher and watch the fill phase. If water continues to run after the initial fill and the cycle begins, the inlet valve is not closing and must be replaced.
3

Turn off the water supply if OC recurs

Do not continue running the dishwasher with a suspected stuck-open inlet valve — the tub will overflow. Turn off the water supply valve under the sink until the valve is replaced.

Professional Service

When to Call a Samsung Technician

⚠ Stop DIY if any of these apply

A failed-open inlet valve requires professional replacement. The valve is accessed through the front kick plate or by pulling the dishwasher out from under the counter. Do not operate the dishwasher with the water supply on until the valve is confirmed repaired.

Estimated Repair Cost

$110 – $230

Exact quote before any work begins. No surprises.

📞 844-739-1647

FAQ

Frequently Asked Questions — Samsung OC

Not until the inlet valve is inspected. If the valve stuck open once due to a debris particle, it may operate normally after the incident. However, if OC recurs on the next cycle, the valve has mechanically failed and must be replaced before further use.
They are related but different. OC (overflow) means too much water is in the tub — detected by the internal water level sensor. LC (leak) means water has escaped into the base pan beneath the tub — detected by the float switch. OC can lead to LC if overflow water drains into the base.
A debris particle (mineral flake, food particle) can temporarily lodge in the inlet valve seat and prevent it from closing, then be flushed clear. If OC appears once and does not recur, monitor the next several cycles. If it recurs, the valve seat is worn and will fail permanently in the near future.

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