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Thread: lost B2S1 o2

  1. 01-03-2013 #1
    pmbmax
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    lost B2S1 o2

    Have beta and when i put scanner on . They are a reading on on B1S1 but no reading on on the other and no label . Went over to list and tryed to select it but it is not there . Like it is removed . I went back to original file opened it and its not their either .checked the harness have 12 volts for heater and heater is working ,ground is good and have output of sensor per meter. I also put a new sensor in just for good mesure still nothing .. Just wandering if they are somthing i am missing... Thanks Phil
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  2. 01-03-2013 #2
    pmbmax
    pmbmax is offline
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    I left out this is a SD tune with 2bar and have MAF turned off. This is a 1500 GMC 99 model. went from a 4.8 to a 6.0 .also wired in a IAT from body .turned off B1S2 and B2S2. any ideas ,,,,,,,,,,
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