Thank you for your question and I understand your concern.
The moisture sensor strips can not fail. The moisture sensor strips are nothing more that two metal strips which acts as a conductor. The moisture sensors can be easily checked by placing the dryer in the diagnostic test mode.
To place the dryer in the diagnostic test mode;
Be sure the dryer is in Standby Mode (plugged in and all indicators off).
Press the following button sequence: MORE TIME - LESS TIME - MORE TIME - LESS TIME all within 5 seconds.
All indicators on the console are illuminated with "88" showing in the "ESTIMATED TIME REMAINING" (two-digit) display, if this test mode has been entered successfully.
Locate two metal strips on the face of the lint screen housing. Bridge these strips with a wet cloth or a finger. If a beep is heard and a software revision number is displayed on the console, the sensor is OK.
If not, or if a beep tone is heard before
bridging the moisture strips, access the moisture sensor by removing the lower access panel and check to see if one of the wires have come disconnected or if one of the wires is shorted to ground/touching any part of the metal/ground. The yellow wire with the red stripe and the black wire will lead back up to the control board mounted on the side of the side panel. If it does not beep and the wires are connected to the metal sensor strips, both wires will need to be check from end to end for continuity with an Ohm meter.
Note; Disconnect the power cord from the power source before removing the front lower access panel.
Check the things I have covered here and if I may be of further assistance as more details become available, please reply to this post.