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oxs light

  1. VW Jetta MKII 1985–1992
    just noticed my OXS light comes on. it gets bright then seems to go out. can;t tell if it actually goes "dark" but it leads me to believe i need to2 sensor, oxs light.o replace the O2 sensor. can anyone tell me where it is on a 1985 VE jetta? thanks a lot.