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  1. 1.8 Liter Turbo
    I am fighting a high fuel trim numbers in a 2001 beetle 1.8T. My scanner only sees B1S2 02 sensor. Does a B1S1 exist? Looking at repair videos it gives impression there is only a post cat sensor. The 02 sensor, B1S2 reads in a very small range, but does respond to throttle. I cant recall the...
    fuel trim
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