i have been having trouble codes o172,0175 for a few days now and i deas on what might be causing them


98 se mtx
k&n air filter custom short shifter
intake res removed
SVT Exhaust shoshop off road ypipe
svt clutch pres. plate ,flywheel, and trans
SVT gauges
SVT front bumper
SVT wheels
fogs /parking

airbox baffles removed