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2006 Tacoma Mass Air Flow P0100, O2 Heater circuit low Input P0031, & P0100 Batt Volt High

Discussion in '2nd Gen. Tacomas (2005-2015)' started by TacoBell07, Nov 11, 2019.

  1. Nov 11, 2019 at 1:05 PM
    #1
    TacoBell07

    #1
    TacoBell07 [OP] Well-Known Member

    Joined:
    Jan 30, 2018
    Member:
    #242930
    Messages:
    402
    Vehicle:
    Four door 2wd Taco
    Was working on exhuast and changed donut gaskets hiwver unplugged the downstream O2 sensor and ever since been getting 3 codes.

    P0031 O2 Heater circuit input low

    P3100 High Batt voltage (might be from resetting computer)

    P0100 Mass or Volume air flow meter circuit malfunction

    What is odd is if i clear codes unplug mass airflow sensor and start vehicle there is no O2 code being throw anymore.
    Anyone else having this issue did notice gas mileage has been bad with light on which sounds like O2 possibly but why does O2 code disappear when running engine with MAF unplugged?
    Anyone have this issue?
     
    TacoBell07, Nov 11, 2019
    #1

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