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Code P0402 - excess flow detected

Discussion in '3rd Gen 4Runners (1996-2002)' started by mem4runner, Mar 6, 2020.

  1. Mar 6, 2020 at 7:41 AM
    #1
    mem4runner

    #1
    mem4runner [OP] New Member

    Joined:
    Feb 17, 2020
    Member:
    #13181
    Messages:
    204
    Gender:
    Male
    First Name:
    Tim
    NOLA
    Vehicle:
    1997 Base 4cyl. 5spd, 2019 TRD OR
    My 97 3RZ-FE check engine light came on last week for P0402. I started by replacing the EGR vac. modulator and the VSV, reset the code last night, and it came back on this morning.

    Anyone else have any experience with EGR excessive flow codes? What should I try next?
     
    mem4runner, Mar 6, 2020
    #1
  2. Mar 12, 2020 at 8:24 AM
    #2
    mem4runner

    #2
    mem4runner [OP] New Member

    Joined:
    Feb 17, 2020
    Member:
    #13181
    Messages:
    204
    Gender:
    Male
    First Name:
    Tim
    NOLA
    Vehicle:
    1997 Base 4cyl. 5spd, 2019 TRD OR
    Well I was wrong, the new code that following morning was for P0420, 02 sensors all good, so I just need a new cat.
     
    mem4runner, Mar 12, 2020
    #2
  3. Mar 19, 2020 at 9:57 AM
    #3
    mem4runner

    #3
    mem4runner [OP] New Member

    Joined:
    Feb 17, 2020
    Member:
    #13181
    Messages:
    204
    Gender:
    Male
    First Name:
    Tim
    NOLA
    Vehicle:
    1997 Base 4cyl. 5spd, 2019 TRD OR
    Bump:

    Mechanic quoted $660 to replace the CAT with an OEM. This seem reasonable?
     
    mem4runner, Mar 19, 2020
    #3
  4. Mar 20, 2020 at 10:57 AM
    #4
    negusm

    #4
    negusm New Member

    Joined:
    Oct 22, 2019
    Member:
    #11745
    Messages:
    2,122
    Gender:
    Male
    Vehicle:
    2002 4Runner SR5 4WD
    Depends on where you live.
     
    negusm, Mar 20, 2020
    #4
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