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code p0030 help

Discussion in '1st Gen. Tacomas (1995-2004)' started by cscott4, Oct 6, 2015.

  1. Oct 6, 2015 at 4:53 PM
    #1
    cscott4

    #1
    cscott4 [OP] New Member

    Joined:
    Nov 3, 2012
    Member:
    #90427
    Messages:
    3
    Gender:
    Male
    First Name:
    Cody
    Rio Linda, CA
    Vehicle:
    03 dbl cab
    The check engine light just came on in my 2003 3.4 auto 4x4 with code p0030. I was told it would be the upstream. O2 sensor. Is this correct? A shop was saying it could be the Mass air flow sensor to. If someone could help out it would be nice
     
    cscott4, Oct 6, 2015
    #1
  2. Oct 6, 2015 at 6:09 PM
    #2
    CodeSeven

    #2
    CodeSeven LOC: 33.781461, -115.867251

    Joined:
    Aug 20, 2014
    Member:
    #136597
    Messages:
    2,186
    Gender:
    Male
    First Name:
    Serge.
    Coachella Valley
    Vehicle:
    '00 Taco 3.4 4x4 TRD ( <3), '06 Taco Prerunner 4.0 (totaled)
    3 inch lift. bluetooth stereo. blue transparent skulls shift knobs
    visually inspect the o2 sensor and test the wiring.
     
    CodeSeven, Oct 6, 2015
    #2
    BlownOutTaco likes this.
  3. Oct 6, 2015 at 6:12 PM
    #3
    benbacher

    #3
    benbacher Purveyor of Fun Vendor

    Joined:
    Jun 29, 2011
    Member:
    #59032
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    9,216
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    Male
    First Name:
    ^
    Anchorage, AK
    Vehicle:
    '10 Tacoma 4x4 LBDC SR5 TRD Sport
    Too many to list now.
    Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit open shorted to ground - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit poor electrical connection - Faulty Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit - Heated Oxygen Sensor (H2OS) Bank 1 Sensor 1 circuit fuse - Faulty Engine Control Module (ECM) The Error code is generally activated on detection of the following conditions: The P0030 is set when the ECM detects an open or shorted to ground condition on the heated oxygen sensor heater circuit

    That's what I found
     
    benbacher, Oct 6, 2015
    #3
  4. Oct 7, 2015 at 7:28 AM
    #4
    cscott4

    #4
    cscott4 [OP] New Member

    Joined:
    Nov 3, 2012
    Member:
    #90427
    Messages:
    3
    Gender:
    Male
    First Name:
    Cody
    Rio Linda, CA
    Vehicle:
    03 dbl cab
    Thank you.
     
    cscott4, Oct 7, 2015
    #4

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