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Reading engine code

Discussion in '1st Gen. Tacomas (1995-2004)' started by ILove2Drive, Feb 7, 2009.

  1. Feb 7, 2009 at 9:21 AM
    #1
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Hey guys. Last night when I was driving home my CEL came on. No difference in driving or anything so I'm not sure what's going on. I have a scan guage and my dad got out and checked it and cleared the code before I could look at it. He says the code is P041, I can't seem to find what that code means though, so if anyone can help me, it'd be much appreciated. Thanks in advance! :)
     
  2. Feb 7, 2009 at 9:57 AM
    #2
    BeefTaco

    BeefTaco WESTern Alliance: NORCAL COAST

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    Here is a link to a code chart I think you are missing some numbers
    it might be a po441 code since he cleared wait and see if it comes back on.
    http://www.ncttora.com/fsm/2000/Repair Manual/Diagnostics/Engine/dtcc.pdf

    Online service manual link
    http://www.ncttora.com/fsm/2000/index.html

    P0441
    Evaporative Emission Control
    System Incorrect Purge Flow

    .Vacuum hose cracked, holed, blocked, damaged or discon-
    nected
    .Open or short in vapor pressure sensor circuit
    .Vapor pressure sensor
    .Open or short in VSV circuit for EVAP
    .VSV for EVAP
    .Open or short in VSV circuit for vapor pressure sensor
    .VSV for vapor pressure sensor
    .Charcoal canister cracked, holed or damaged
    .ECM
     
  3. Feb 7, 2009 at 10:56 AM
    #3
    Janster

    Janster Old & Forgetful

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    Check your gas cap.

    If they're not 'tight' can setoff the CEL.
     
  4. Feb 7, 2009 at 12:21 PM
    #4
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Yeah man I was lookin the manual earlier too, this helps me think even more that it was probably 441, I asked him earlier if it was 441 and he says it wasn't. I took it up the road and it didnt come back on, but I'll give it some time. So I guess we'll see, but thank you! +1 :)
     
  5. Feb 7, 2009 at 12:24 PM
    #5
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Gas cap is good, but thanks for the headsup! :)
     
  6. Feb 9, 2009 at 11:43 AM
    #6
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    The code came back today, it was P0141 so I'm assuming that's what it was. I looked it up and was just wondering how serious of an issue this was? Should I probably take it in?
     
  7. Feb 9, 2009 at 11:48 AM
    #7
    GT_Taco

    GT_Taco Newbie here

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    Im not an expert.. but it sounds minor. HOWEVER, even if it is minor, and has ANY ties into the emissions testing whatsoever, if you live somewhere that has to do emissions testing, there is a good chance that you won't pass it.
     
  8. Feb 9, 2009 at 12:01 PM
    #8
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Alright thanks, is it anything that will affect the truck as far as performance or anything like that goes?
     
  9. Feb 9, 2009 at 12:06 PM
    #9
    GT_Taco

    GT_Taco Newbie here

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    Checking that code in the list it says:

    P0141
    (DI–241)
    Oxygen Sensor Heater Circuit
    Malfunction (Bank 1 Sensor 2)
     Same as DTC No. P0135

    As I mentioned before, there is a good chance that would cause you to fail emissions. I doubt it would affect too much as far as day to day driving. It might indicate other problems with your engine performance (ie. too rich/lean of a mixture). Though, there are a host of other sensors that would probably flag warnings if that were the case.
     
  10. Feb 9, 2009 at 12:12 PM
    #10
    dually

    dually Low and slow

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    Not as many as the 98..
    Check your charcoal canister. I had the same code and it turns out my charcoal can had a 3in long crack in the bottom.
     
  11. Feb 9, 2009 at 12:53 PM
    #11
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Alright thanks guys! :thumbsup:
     
  12. Feb 9, 2009 at 1:23 PM
    #12
    gonzo6up

    gonzo6up Well-Known Member

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    Also check the seal around your MAF sensor because i had the same code pop up and my problem was that too much air was getting in and the mixture was too lean.
     
  13. Feb 9, 2009 at 1:26 PM
    #13
    dually

    dually Low and slow

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    Not as many as the 98..
    Then he would have a code for being too lean also.
     
  14. Feb 12, 2009 at 8:15 PM
    #14
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Alright I have another quick question on this. Does anyone know exactly where this sensor is located? And is it something that I could replace myself or something that would probably need to go in to the dealer to be fixed?
     
  15. Feb 13, 2009 at 2:12 PM
    #15
    ILove2Drive

    ILove2Drive [OP] Well-Known Member

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    Anyone have any ideas?
     
  16. Dec 20, 2009 at 6:03 PM
    #16
    shitroc

    shitroc Master of War

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    its your rear o2 sensor located after the catalytic converter. Its also the cheaper of the two sensors on your exhaust.
     
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