Viking Microwave Error Code ERROR

The ERROR code on a Viking microwave appears during sensor cooking when the AH (absolute humidity) sensor cannot detect vapor from the food, the sensor circuit is open or shorted preventing initial voltage balancing, or the cooking cycle was interrupted during its first stage. The AH sensor is essential to automatic sensor cooking, as it measures humidity released by food to determine cook time. This code points to either a setup or environmental issue, or a hardware fault in the sensor or control unit.

The ERROR code disables sensor cooking mode, so the microwave will not complete an automatic cook cycle while it is active. Standard manual cooking functions may still be available, but sensor cooking should not be attempted until the underlying cause is resolved. If the error is due to a shorted AH sensor, continued use in sensor mode could produce inaccurate cooking results.

Pressing STOP/CLEAR will dismiss the ERROR display, but it will not resolve the underlying cause. If the issue is environmental, such as a damp oven interior or a room that is too warm, correcting those conditions before restarting sensor cooking should prevent the error from returning. If the AH sensor is faulty, the error will reappear every time sensor cooking is attempted until the sensor or control unit is repaired or replaced.

Several causes of this error can be resolved without any parts or tools. Make sure the oven has been plugged in for at least 5 minutes, dry the oven interior and the outside of your cooking container completely, and confirm the room temperature is below 95 degrees Fahrenheit before restarting sensor cooking. If the error continues after addressing those conditions, the AH sensor likely needs to be tested for an open or short circuit and may require replacement, which is a more involved repair.

If the fix is environmental, such as drying the oven or waiting for the unit to warm up after being plugged in, there is no cost involved. If the AH sensor needs replacement, parts costs typically range from around $30 to $100 or more depending on availability, with labor adding to the total if a technician is needed. Control unit replacement, if required, can be significantly more expensive, often ranging from $150 to $400 or higher for parts alone.