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Samsung Dishwasher OC Error Code: A Complete Guide

Technically Reviewed by Oleg Chudnovski on Jan 21, 2026 | Written by Spark Service PRO Editorial Contributors

Samsung dishwashers have been trusted household appliances for many years, providing reliable service. However, even the most dependable machines can encounter issues. One such issue is the OC error code appearing on the display.

Let's get to the bottom of our topic, "Samsung Dishwasher OC Error Code: A Complete Guide," which was written by our Samsung factory-trained technicians with more than several decades of experience.

What Does the OC Error Code Mean On a Samsung Dishwasher?

The OC code on a Samsung dishwasher indicates an overflow error. This means that the dishwasher has detected an excessive amount of water inside, beyond the maximum safe limit. While resetting the OC code is possible, understanding the underlying issue is essential to prevent further problems.

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Common Causes of the OC Code

1. Overuse of Washing Detergent: Too much detergent or the wrong type (e.g., handwashing detergent) can produce excessive foam. This foam can block vent tubes, create pressure, and trigger the OC code. Let's get to the steps to fix this issue:

• Drain the water completely.
• Remove any dishes from the dishwasher.
• Run the appliance on rinse mode to clear any remaining foam.
• Start a normal wash cycle without any dishes.

If the OC code does not reappear, you have resolved the issue. This method shows how to manage a false OC code due to detergent overuse.

2. Incorrect Drain Hose Connection: If the dishwasher is not correctly connected to the drain, it may allow water from the sewer to backflow into the appliance. The OC code is triggered when the water level sensor detects this excess water. The following steps may resolve the issue:

• Ensure the dishwasher is connected to the sewer line through a properly installed siphon.
• Run a quick wash cycle without dishes to verify the issue is resolved. If the drain hose is correctly set, the OC code should not appear.

3. Control Module Malfunction: Electronic systems can occasionally misread conditions and display error codes without an actual issue. A simple restart can often clear this. The following recommendation can restart your dishwasher the correct way:

• Turn off the dishwasher and unplug it from the outlet.
• Wait five minutes.
• Plug the dishwasher back in and start a wash cycle.

If the OC code disappears, it is likely a temporary glitch. However, if the issue persists, professional assistance may be needed.

Do you still need help with the OC Error Code on the Samsung Dishwasher?

If you have checked the drain hose connection and restarted the appliance, but the OC code continues to appear, it’s best to contact a certified technician. Persistent error codes may indicate a malfunctioning component that requires expert diagnosis and repair.

While many dishwasher issues can be resolved with basic troubleshooting, persistent error codes should be addressed by professionals to avoid further complications

- Oleg Chudnovski, CEO

The OC code on your Samsung dishwasher indicates a water overflow issue, either real or false. Understanding the causes and following the outlined steps can help you troubleshoot and resolve the error. In cases where a solution isn’t apparent, don’t hesitate to seek professional repair services. Addressing the problem promptly can prevent further damage and ensure your dishwasher runs efficiently for years to come.

Contact Spark Service PRO today to book an appointment by requesting a service form or call 888-242-0777. We guarantee that our Samsung factory-trained dishwasher technicians will be dispatched promptly to your property, ensuring your appliances are up and running before the day ends.