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Thread: still no data from new o2 sensor

  1. #1
    Registered Member

    2008 mazda 5

    Join Date
    Apr 2017
    near L.A.

    still no data from new o2 sensor

    my 2008 mazda 5 threw a p2177 - "System Too Lean Off Idle Bank 1" couple weeks ago. The Torque app (android app that reads from the bluetooth odb2 reader) also shows there's no data from b1s1. Ordered a denso sensor (same as the old. 5 wires: grey, black, white, yellow, blue ) and installed it today but app still says no data. any idea? I have a multimeter but not sure which wires to probe for resistance test. Any fuse I need to check? thanks

    see attached.

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    Last edited by 08mazda5owner; 09-15-2019 at 12:28 PM.

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