P1170 heated oxygen sensor (front) (inversion) ,p1790 throttle position sensor open or short I bought a new throttle position sensor and it still isnt fixed and p1792 barometric pressure signal circuit malfunction I looked through my chilton repair manual and didnt find anything to do with p1792 trouble code or how to fix it. please help me. 1997 mazda mpv has 140,028 miles and a 3.0 engine two wheel drive thank you. :?

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