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Question: Rear O2 sensor simulator problems

Discussion in '2nd Gen. Tacomas (2005-2015)' started by bcroach78, Feb 24, 2011.

  1. Feb 24, 2011 at 4:56 AM

    bcroach78 [OP] Well-Known Member

    Feb 5, 2011
    2010 Crew cab TRD L/B S/C
    I tried searching and coulnt find what I was looking for. On the URD website it states this about O2 sensor simulators

    "Toyota started using a wideband type O2 sensor (air/fuel ratio) in the front position for better engine control. These wideband type sensors need to be recalibrated from time to time by the ECU. The ECU uses the rear sensors for this recalibration process. The ECU cannot properly recalibrate the wideband sensor using a falsely generated signal."

    Has anyone who uses headers and a rear O2 sensor simulator ran into any problems? What kind of problems can this create? Is there any way to recalibrate the wideband sensor?

    I probably should have put this in the Tech chat but since I am looking for answers from 2nd gen owners I placed it here.

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