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oxygen sensor

  1. Check engine light- catalytic converter or o2 sensors?

    1G Problems & Issues
    So my check engine light came on not too long ago and I took it to get it diagnosed and it came back with a p0420. Autozone said it was the o2 sensors but I didn't believe then hence I took it to get diagnosed at Hondoctors in Las Vegas and they said I needed to replace the two cats up front and...
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