Viking Range Error Code RTD (Griddle)

This error means the control board has detected a fault in the griddle's RTD temperature probe circuit. The probe is the sensor responsible for measuring griddle surface temperature, and the board cannot read a valid signal from it. The fault is indicated by the griddle cycle light flashing 2 times, pausing 4 seconds, and repeating. The griddle should not be used until the fault is resolved.

The griddle should not be operated while this error is active, since the control board cannot accurately monitor or regulate griddle temperature without a functioning RTD probe. Uncontrolled heat on the griddle surface poses a safety and food quality risk. Other burners on the range may still function normally, but the griddle itself should be considered out of service until the fault is repaired.

Cycling power to the range may temporarily clear the error display, but if the underlying fault in the probe or wiring still exists, the error will return when the control board attempts to read the sensor again. A reset is not a repair. The probe resistance and wiring connections need to be inspected and corrected to resolve the fault permanently.

A knowledgeable DIYer can perform basic diagnostics such as checking probe resistance with a multimeter and inspecting wiring connections. The probe should read 1090 ohms at 75°F, and any reading far outside that value at room temperature points to a failed probe or wiring problem. Replacing the probe or repairing the harness is within reach for someone comfortable working with appliance wiring, but if the control board is suspected, professional service is recommended.

Repair costs vary depending on what component has failed. A replacement RTD probe typically costs in the range of $30 to $100 for the part alone. Professional labor for diagnosis and repair can add $100 to $250 or more depending on your location and service provider. A control board replacement, if needed, is the most expensive scenario and can bring total costs to several hundred dollars.