I have a tac5004 that once a month gets a 848 fault it is always between 3rd and 4th floor. Ntsd vane flt. I have to reset the fault monitor. My ntsd & ntst is optical. Any help is appreciated .
what i usually do is put electrical tape on the inner opening of the transducer to get a perfect 3/4 from the edge of the vanes. Make sure the vanes are center. Make sure the car is not shifting at those floors and do a tbs . Good luck
