What this code means
Displayed when the AH sensor cannot detect food vapor during sensor cooking, or when the door is opened or Stop/Clear pad is touched during the first 16-second stage of sensor cooking, or when the bridge circuit cannot be balanced due to disconnection of the absolute humidity sensor.
First step from the service manual
Check initial sensor cooking conditions (oven plugged in at least 5 minutes, room temp below 95°F, exterior of cooking container and oven interior are dry). If conditions are met, perform AH Sensor Test (Procedure L) to determine if AH sensor or control unit is defective.
Next steps: diagnose the root cause
Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.
Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.
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