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acura rsx P0122 Throttle Position Sensor/Switch A Circuit Low Input

Home Forums Stay Dirty Lounge Service and Repair Questions Answered Here acura rsx P0122 Throttle Position Sensor/Switch A Circuit Low Input

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  • #443205
    karpich1234karpich1234
    Participant

      hey guys,
      i dont know if anyone has the same or answered this already

      so i have a code for P0122 Throttle Position Sensor/Switch A Circuit Low Input.
      i have a new tps sensor on there and it has been adjusted already. it still ideals alot. when cold it startes at 2000 rpm and goes down tell warmed up. after it gets warm it starts to ideal.
      i have been tring to find the problem and how to fix it for a while. yes i know some people say you need a new throttle body. well i dont see the point becasue i want to learn something about the problem rather then just replacing the whole thing.
      any help would be great
      thank you

    Viewing 5 replies - 1 through 5 (of 5 total)
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    • #443206
      MattMatt
      Participant

        I’m confused. Is the idle running around on you? Did you test the integrity of the TPS circuit before you replaced the sensor? Did you verify that the sensor was bad by using a DVOM and running a sweep test on it? If your idle is high, you may just have a vacuum leak, or some other issue. Here’s a video on checking for vacuum leaks as a starting point. Heed the advice of having a fire extinguisher.

        http://www.youtube.com/watch?v=9CPqbaSgcok

        Good luck.

        Edit: BTW, I’m not sure how you ‘adjust’ a TPS…

        Also, here’s Eric’s Honda idle speech:

        http://www.ericthecarguy.com/search.asp … h&ff=false

        #443207
        karpich1234karpich1234
        Participant

          Yes it does idle on me. You see I already checked for vacuum leaks. There is none. I also watched erics videos on ideal problems. None of those things helped.

          The tps sensor is good. Tested it and it was good. And its adjusted properly.

          I don’t know what to do. Maybe start from the begining again and test everything?

          The only thing I really have left to do is by a new throttle body for 500 bucks

          #443208
          college mancollege man
          Moderator

            when you replaced the tps. did you use a OE tps? what year is the acura and engine size?C8-)

            #443209
            dreamer2355dreamer2355
            Participant

              You need to check the integrity of the TPS circuit. Do you have a scan tool that can show your PID data?

              #443210
              EricTheCarGuy 1EricTheCarGuy
              Keymaster

                I’m glad you tested and haven’t replaced the TPS, well done, it’s not common for Honda TPS’s to fail. Also good job on checking for vacuum leaks. Now that we have that out of the way have you checked the tension on the throttle cable? It could be that it’s adjusted too tight and if it is the computer will not register a closed throttle and therefore won’t set the idle correctly. It could also be a problem with the wiring coming from the sensor in which case you’ll have to get your hands on a wiring diagram and check the inputs going directly into the computer to see if it’s getting the same readings that are coming from the sensor itself.

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