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2004 Tacoma OBD port and scanner ??

Discussion in '1st Gen. Tacomas (1995-2004)' started by HikerLT, Jan 24, 2011.

  1. Jan 24, 2011 at 7:03 AM

    HikerLT [OP] New Member

    Jan 24, 2011
    2004 tacoma 4x4
    2004 Tacoma 4x4 regular cab

    41k miles, just had the check engine light come on, and stay on, this weekend. Its was fairly cold, maybe around 12 degress F, not too cold. When I release the gas cap, there was pressure behind it...it wasn't loose.

    1) where is the OBD port located?
    2) Is there a special adapter required to connect to a Toyota OBD port ? ( my reason - went to borrow a OBD scanner from a co-worker, and when I said that it was for a Toyota he said that Toyota requires an adapter for his scanner to fit)
    3) I see thatthe method of resetting the maintenence light on 2005 and up will not work here ( holdng the odometer button)....So is the only way to reset the light to do it either by reset thru a scanner tool, or by removing the ( Positive or ground) connection to the Battery for 15 minutes ?
    4) Should I reset the light before getting a scan code reading, to see if it comes back on ?
    5) Any danger in driving the truck like this, with the light on ? Nothing feels or runs different...??

    Thanks for any tips and advice.
  2. Jan 24, 2011 at 8:45 AM

    EnolaGaia Well-Known Member

    Sep 9, 2006
    Midwest USA
    '01 & '04 S-Runners
    01 SR: Double Cab conversion, S/C, lowered.
    The OBDII connector (DLC3 connector) is under the dash near the center console. Look in the vicinity of the parking brake.

    No special adapter necessary for the port.

    Yes - the only way to reset the check engine light (which is not the same thing as a maintenance reminder light) is to clear the code(s) or disconnect power for a few minutes.

    If there are no noticeable symptoms, I'd suggest resetting the CEL once to see if the warning light comes back on. It is possible for transient conditions to trigger a CEL.

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