open loop

  1. J

    ECU O2 sensor wiring HELP P0134 stuck in open loop

    Hey Everyone, I am having a huge problem with my o2 circuitry. I get the P0134 no activity from the upstream o2 sensor; I changed the sensor with a new OEM denso unit and I am still not getting any o2 voltages on the when I data log from the obdII port. i read 0.00V on the front o2 and...
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