Len,
thank you for suggestion. However, I did replace the ET sensor and reprogrammed the unit with no change in the outcome. Actually I tried 2 new ET sensors with same results: error code Eb1230 is still showing.
I also replaced the aux fan because wasn't kicking-in. The new one is still not kicking-in and the same Eb1230 error is shown. I just shorten the vertical 2 pigtail connector from the dryer by placing a copper wire connecting the two terminals, to see if the aux fan will switch on. I will take the car shortly for a spin to see if anything changed.
PAT

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pat201