GE Dishwasher Error Code C6

The C6 code means the dishwasher water temperature did not reach the required level during the wash period, even after a 20-minute extension the control board automatically adds to allow more heating time. On GSD2800 models with the Sani option, it can also appear if the final rinse does not reach sanitizing temperature. The fault points to a problem with the incoming hot water supply, the heating element, or the heater circuit.

Running the dishwasher with a C6 fault means the water is not reaching proper wash or sanitizing temperatures, so dishes may not be adequately cleaned or sanitized. This is not an immediate safety hazard in the sense of a leak or electrical short, but it does mean the machine is not performing as intended. It is best to resolve the underlying cause before relying on the dishwasher for sanitizing tasks.

Resetting the dishwasher may temporarily clear the C6 code from the display, but if the underlying problem with heating or water temperature has not been fixed, the code will return during the next cycle when the machine again fails to reach the required temperature. A reset is useful for confirming whether the fault is intermittent, but it is not a repair. Address the root cause to prevent the code from recurring.

Some causes of C6 are DIY-friendly, such as checking that your home's water heater is set to at least 120 degrees Fahrenheit and running hot water at the sink before starting a cycle. Testing the heating element for continuity with a multimeter is also within reach for a handy homeowner. However, replacing the heating element, repairing wiring, or diagnosing a control board issue may require disassembly of the dishwasher tub and comfort with electrical components.

Repair costs depend on what is causing the fault. If the fix is simply adjusting the home water heater temperature, there is no parts cost. A replacement heating element typically ranges from roughly 20 to 80 dollars for the part, with additional labor costs if a technician is hired. A new control board is the most expensive potential repair, often ranging from 100 to 300 dollars or more for parts alone.