mypros+
Error code reference

Viking Range Error Code RTD (Griddle)

Griddle RTD probe fault indicated by 2 flashes of the griddle cycle light followed by 4 seconds OFF on the…

Viking codesViking range codes

Griddle RTD probe fault indicated by 2 flashes of the griddle cycle light followed by 4 seconds OFF on the control panel.

First step from the service manual

Check griddle RTD probe resistance (1090 ohms at 75°F) and wiring.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

MyPros+ Max

Get the full diagnostic procedure for RTD (Griddle).

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What RTD (Griddle) means on a Viking range

The RTD (Griddle) error on a Viking range indicates a fault detected in the griddle's RTD (Resistance Temperature Detector) probe circuit. The control board monitors the probe's resistance signal continuously to determine griddle surface temperature. When the resistance reading falls outside the expected range, or the signal is absent entirely, the board flags the fault and signals it through the griddle cycle light with a repeating pattern of 2 flashes followed by a 4-second pause. This visual alert is the control's way of communicating that it cannot reliably read or control griddle temperature.

The RTD probe is a passive sensing element whose resistance changes predictably with temperature. For this Viking griddle probe, the correct resistance at 75°F is 1090 ohms. A reading significantly above or below that value at room temperature points to a damaged or failed probe. Resistance readings of zero suggest a short circuit in the probe or wiring harness, while an open circuit (infinite resistance) typically means the probe element has broken internally or a wire connection has failed.

Wiring problems between the probe and the control board are also a common source of this fault. Corroded terminals, loose connectors, or heat-damaged insulation can introduce resistance into the circuit or break continuity entirely, producing erroneous readings that trigger the error. Diagnostic work should begin with a resistance measurement at the probe leads using a multimeter, confirming the 1090-ohm baseline, then tracing the wiring back toward the control board to rule out harness faults before condemning the probe or board itself.

Source: manufacturer service documentation.

Common causes of RTD (Griddle)

  1. 01

    Failed RTD probe

    Part replacement

    The probe element itself has degraded or broken internally, producing a resistance reading that does not match the expected 1090 ohms at 75°F. Confirm by measuring probe resistance directly with a multimeter.

  2. 02

    Damaged or disconnected wiring harness

    Wiring / connection

    Wires connecting the RTD probe to the control board can suffer heat damage, corrosion, or loose connections over time, interrupting or distorting the resistance signal. Inspect the full harness length and all connector terminals for visible damage or looseness.

  3. 03

    Corroded or loose connector terminals

    Wiring / connection

    Corrosion or poor contact at the probe connector or control board connector adds unwanted resistance to the circuit, causing the board to read an out-of-range value. Clean or reseat the terminals and retest.

  4. 04

    Short circuit in probe or wiring

    Part replacement

    A short within the probe body or along the wiring harness will cause a near-zero resistance reading, which the control board interprets as a fault. A multimeter continuity check of the probe and each wire to chassis ground can identify this condition.

  5. 05

    Faulty control board

    Part replacement

    If the probe and all wiring check out correctly at 1090 ohms with no shorts or open circuits, the control board's input circuit for the griddle RTD may have failed. This is the least likely cause and should only be considered after all other components are confirmed good.

See the test procedure for each cause

Frequently asked questions about RTD (Griddle)

What does RTD (Griddle) mean on a Viking range?
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.
Can I fix the RTD (Griddle) error myself?
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.
Is it safe to use my Viking range while the RTD (Griddle) error is showing?
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.
How much does it cost to repair the RTD (Griddle) error on a Viking range?
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.
Will resetting my Viking range clear the RTD (Griddle) error?
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.

Related Viking range codes

All Viking range codes
View all 101 Viking range codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass