1. Welcome to Tacoma World!

    You are currently viewing as a guest! To get full-access, you need to register for a FREE account.

    As a registered member, you’ll be able to:
    • Participate in all Tacoma discussion topics
    • Communicate privately with other Tacoma owners from around the world
    • Post your own photos in our Members Gallery
    • Access all special features of the site

Another p0430 (bank 2) 05 Tacoma

Discussion in '2nd Gen. Tacomas (2005-2015)' started by Tacomajeff, May 18, 2011.

  1. May 18, 2011 at 4:42 AM
    #1
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Hello everyone. New to Tacoma World.
    Had the check engine light on for a while now. need to be inspected in
    North Carolina. Seems to be no loss in power, no exhaust smoke or fumes.
    I am a 46 year old carpenter whose work is slow. Wife just had a 2 pound
    preemie who spent a lot of time in th NICU. Money is tight. Hope someone can help. If I read right. bank 2 would be bank on side of # 2 cylinder which would be driver's side. # 2 cylinder is on the right, facing the vehicle.
    Don't know where to start. How do I know if it is manifold cat which is between the 2 O2 sensors or cat after 2 sensors. Or could it be one of the 2 O2 sensors themselves. Toyota is an 05 Tacoma 4wd, 4.0 V6.
    Only 6 years old but 110,000 miles so no warranty. Can't afford to be guessing. Hope some one can point me in the right direction.
     
  2. May 18, 2011 at 4:49 AM
    #2
    StandingCow

    StandingCow Well-Known Member

    Joined:
    Apr 24, 2009
    Member:
    #16373
    Messages:
    1,799
    Gender:
    Male
    First Name:
    John
    NJ
    Vehicle:
    09 SR5 4x4 V6 access cab
  3. May 18, 2011 at 4:51 AM
    #3
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,741
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
  4. May 18, 2011 at 4:53 AM
    #4
    bama trd

    bama trd Well-Known Member

    Joined:
    Mar 31, 2010
    Member:
    #34371
    Messages:
    277
    Gender:
    Male
    Alabama
    Vehicle:
    2007 Silver Tacoma TRD Off Road
    Painted Grill, Tinted Windows, BF Goodrich AT 265/75/16, BHLM, Fog light on anytime mod, vent visors, Graphite Rims
    Welcome to TW , Don't know much about your question but... look at the bottom of the page and there are threads concerning your problem , from other members and you can read their solutions or go to the "search" , on the upper blue bar and type in your code. Good Luck with the truck and everything at home.
     
  5. May 18, 2011 at 4:55 AM
    #5
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,741
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
  6. May 18, 2011 at 3:00 PM
    #6
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Cleared code and it returned after 25 miles.
    Ran vehicle at night. no glowing cat.
     
  7. May 18, 2011 at 3:08 PM
    #7
    cotruckin

    cotruckin Well-Known Member

    Joined:
    May 4, 2009
    Member:
    #16800
    Messages:
    230
    Gender:
    Male
    Westminster, CO.
    Vehicle:
    Lifted 06 TRD Sport
    Bilstein 5100 Lift with rear 1" blocks, ARE Z series topper with Yakima rack and Rola basket, some audio equipment, some more goodies
    This sounds similar to what I was getting. I took my truck in under the extended warranty due to the CEL coming on. I had cleaned the MAF and the TB put everything back together and fairly quickly the light came back on. Both cats on my truck were bad and luckily got replaced. The tech never told me what code it was throwing so I can't say if this is the exact same or not.
     
    bearballs likes this.
  8. May 18, 2011 at 4:24 PM
    #8
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Hello cotruckin. Do you know if they were the upper manifold cats or the cats after the 2nd 02 sensor that were replaced. Mine are no longer warrantied. Did you have any power loss, smell, or smoke, or anything other than CEL to make you think something was wrong. Thanks for your reply. It does sound similar.
     
  9. May 18, 2011 at 4:47 PM
    #9
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Is there any way to trick the CEL so I can get an inspection and then have time to diagnose the problem. Also, is it true that gas with greater than 10% ethanol can cause a p0430 code read.
     
  10. May 19, 2011 at 5:30 AM
    #10
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,741
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    There is no quick trick for this code other than hoping a reset will clear it for good. I'm not sure about the ethanol >10% harming the CAT.
     
  11. May 19, 2011 at 6:13 AM
    #11
    Bone Buster

    Bone Buster Active Member

    Joined:
    Jul 25, 2009
    Member:
    #20171
    Messages:
    27
    Gender:
    Male
    First Name:
    Josh
    South GA
    Vehicle:
    06 Tacoma TRD
    Tinted tail lights, 3in lift ome with bill.5100, Ranch hand brush guard, motometal wheels with 33x12x16 mudd grallers, K&N cold air intake
    Ive had the same problem now for about 30,000 miles. Mech said as long as its running fine dont worry about it!
     
  12. May 19, 2011 at 9:04 AM
    #12
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,741
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    He has to pass emissions tests.
     
  13. May 19, 2011 at 9:48 AM
    #13
    cotruckin

    cotruckin Well-Known Member

    Joined:
    May 4, 2009
    Member:
    #16800
    Messages:
    230
    Gender:
    Male
    Westminster, CO.
    Vehicle:
    Lifted 06 TRD Sport
    Bilstein 5100 Lift with rear 1" blocks, ARE Z series topper with Yakima rack and Rola basket, some audio equipment, some more goodies
    It was the uppers, and there was no signs other than the CEL was on.
     
  14. May 19, 2011 at 8:26 PM
    #14
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    I think I'll start with the upper O2 sensor.
    If it turns out to bet the cat then I would probably want a new sensor anyway.
    Are they hard to remove with the cat still in place. Looks tight.
     
  15. May 19, 2011 at 9:45 PM
    #15
    BlueT

    BlueT Well-Known Member

    Joined:
    Mar 30, 2009
    Member:
    #15341
    Messages:
    5,645
    Gender:
    Male
    NorthEast
    Vehicle:
    07 Dbl Cab LB with LSD
    I moded 1999 Taco so much it had turned to Land Cruiser
    You can test sensor before replacing. They are not cheap and if they test good it should be cat.
    Silly question but when did you replace sparkplugs on that thing? Also did you check if fresh air supply to cats is working . On the end you can try burning off whats on cats. Buy good fuel (like 93 out of Shell) then take a long road trip something that will make 300 mile run. Cats dont go bad they get clogged due to unburned fuel, oil and soot.
     
  16. May 22, 2011 at 3:03 PM
    #16
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Changed plugs and air filter. Cleaned throttle body and MAF sensor while at it.
    Light came back at 50 miles. Same code. Usually comes back at less than 10 miles.
    Thought I had it beat. Plugs looked fine. Gap a tad bit wide. Is it correct to assume a
    bad MAF would affect both sides. P0420 and P0430.
    Could you tell me how to check O2 sensors. Seems I'm down to them or the cat.
    Pretty good w/ directions.
    Forgot to mention, runs like a top.
     
  17. May 24, 2011 at 9:44 PM
    #17
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Went with the Tacobox suggestion of 5/22/10 and tried the spark plug
    anti-fouler on the rear O2 sensor to check for cat/O2 trouble,
    Reset codes and have driven 100 miles w/out the dreaded P0430 or
    any other check engine codes. Code reader says zero codes.
    Must be the catalytic converter,
    Great way to check cat code.
    Thanks Tacobox.

    anti-fouler.jpg
     
  18. May 25, 2011 at 5:36 AM
    #18
    98tacoma27

    98tacoma27 is gooder 'en chicken Moderator

    Joined:
    Dec 18, 2008
    Member:
    #11714
    Messages:
    49,741
    Gender:
    Male
    First Name:
    Ben
    Beech Creek
    Vehicle:
    05 Tundra SR5 (+250k AND COUNTING), 88 SR5 PU (SOLD), 98 TRD OR (CRUSHED)
    5100's all on fours
    Interesting. How do you hook it/them up?
     
  19. May 25, 2011 at 6:01 AM
    #19
    Tacomajeff

    Tacomajeff [OP] Member

    Joined:
    May 14, 2011
    Member:
    #56644
    Messages:
    22
    Gender:
    Male
    First Name:
    Jeff
    Western NC
    Vehicle:
    05 Tacoma TRD 4wd
    Drill out anti-fouler to 1/2 inch hole. Screw lower O2 sensor into anti-fouler,
    then screw all back into exhaust. Restricts airflow across sensor thus not tripping
    CEL. Pretty nifty. If light comes back on, then it is probably the O2 sensors.
    CEL stays off then you know it is a cat problem. Rechecked with code reader. getting
    zero codes reading, so computer thinks all is well.
    I found them at O'Reilly auto parts for less than $6.00. They come 2 in a package.
    Several different sizes available. Part #42009 (18mm) fits 05 Taco exhaust. I guess
    HELP! is the name brand.
    Cheap test and/or fix.
    Thanks again Tacobox if you are out there.
     
  20. May 25, 2011 at 6:56 AM
    #20
    BlueT

    BlueT Well-Known Member

    Joined:
    Mar 30, 2009
    Member:
    #15341
    Messages:
    5,645
    Gender:
    Male
    NorthEast
    Vehicle:
    07 Dbl Cab LB with LSD
    I moded 1999 Taco so much it had turned to Land Cruiser
    Good stuff, did you try making long trip with high octane fuel to see if you can burn off crap out of the cat converter ?
     
To Top