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Thread: Throttle Sensor Error (P 2121) in Corolla Gli Automatic 2011

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    Default Throttle Sensor Error (P 2121) in Corolla Gli Automatic 2011

    Fellow Members, Recently my Corolla Gli Automatic showed me a check engine light while I was driving, After connecting it to my OBD2 scanner i got to know the trouble code was P 2121 which is related to throttle sensor. After talking to one of the mechanics, I got to know it is a common problem in 1.6 Corolla Gli Auto. Just wanted to know whether anyone knows about this issue or how to get it resolved. Also that my fuel consumption has fallen to almost 7.5 km/l.

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      My uncles corolla had the similar problem.
      The problem got worst when he was driving on 100 km and in the mean time throttle stopped response.
      Dealer said that it's a minor issue but we faced it more the 4 time and at the end we sold our car.

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      Throtle body if get dirty, it hinders ots movment and results in error shown to u. Problem starts by inducing after market less priced air filter that allows dust to go in T.body.. Please instead of mechanic take your car to 3s and let them do the work. These mechanics usually worsen the situations.
      www.dr-tanveer.com

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      In my D15b I was facing problem of occasional rich burning and stalling on removing foot from accelerator paddle, fuel consumption was very very high. On investigating its TPS found damaged. Got it replaced and now it is working like a charm.
      If left unattended, rich burning or miss firing can damage rigs etc.
      Get it replaced ASAP.
      Project GTxx

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      Self edit
      Duplicate post
      Project GTxx

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      Quote Originally Posted by drtanveerali View Post
      Throtle body if get dirty, it hinders ots movment and results in error shown to u. Problem starts by inducing after market less priced air filter that allows dust to go in T.body.. Please instead of mechanic take your car to 3s and let them do the work. These mechanics usually worsen the situations.
      Mine showed this error within a week it was delivered.

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      Replace it as soon as you can.
      It is not something serious, i also faced the same.
      "Live Fast, Die Young and Leave a Beautiful CORPSE "
      How much horsepower gain do you get from your NOS sticker ?

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      thanks for ,all your comments. I went to toyota central today, they said this problem came in 2011 and 2012 corolla gli and if the problem doesnt get resolved by clearing the code. They will have to change the harness wiring of the car which will cost around 50000. bad news is im out of warranty period.

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      Quote Originally Posted by nasir007 View Post
      Replace it as soon as you can.
      It is not something serious, i also faced the same.
      Replace what?

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      Quote Originally Posted by sal View Post
      Mine showed this error within a week it was delivered.
      thats horrible just within a week

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      as posted by @capsat

      "The accelerator pedal position sensor is mounted on the accelerator pedal bracket. The accelerator pedal position sensor has 2 sensor elements and 2 signal outputs: VPA and VPA2. VPA is used to detect the actual accelerator pedal angle (used for engine control) and VPA2 is used to detect malfunctions in VPA. When the difference between the voltage outputs of VPA and VPA2 deviates from the standard, the ECM determines that the accelerator pedal position sensor is a malfunctioning. The ECM turns on the MIL and the DTC is set."

      VPA and VPA2 are 2 redundant signal outputs just to ensure that ECM is reading the correct value, when VPA and VPA2 outputs deviates the ECM considers it as a faulty Pedal sensor

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      this sort of damage occurs when the pedal itself is manhandled (tried to bend) or a faulty pedal sensor, In any case connect a proper OBD scan tool and verify the pedal position input and throttle motor output. You will find the fault.
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      @GURU you mean heavy foot & thumping can be likely cause of such damage ?
      - www.crackwheels.com - A skilled Dictator is much more beneficial to Country......than a Democracy of Ignorant people

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      Quote Originally Posted by hameeds01 View Post
      thats horrible just within a week
      Yup, thts y sold it and bought a civic ! 3 trouble less years have passed !

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      CLEAN BATTERY TERMINALS....i had same problem in my toyota corolla GLI (2011)and toyota motors suggested to replace cable harness cost 50000/-Rs...But my problem used to reset automatically when i shut off the car...The problem was increasing day by day some time even twice a day.. One day i just thought to check battery terminals, what i found was sulfuric acid deposits on +ive terminal.. i cleaned battery terminal...Since then i have drove about 450 km but the problem didn't came and hope it ll not come again...hope this will help you guys aswell.. cheers

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      I am having issue to in my altis 2012. Did u get issue again after cleaning terminals??

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      this is not your wiring problem. get ur acc. pedal service. and remove battery terminal.
      check if problem resolve or still present, if present then only solution is pedal replacement. Qabli pedal will cost u around 4k to 6k from any electrician.

      Throttle Sensor Error P 2121 in Corolla Gli Automatic 2011 -1590500
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      After cleaning its reolved.
      "SIMPLICITY IS THE BEST BEAUTY"

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