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Traction Control and P0121 SES problem

This is a discussion on Traction Control and P0121 SES problem within the Firebird / WS6 forums, part of the Vehicle Specific category; Hello. I am a new member to this forum. I have a Black 1999 Firehawk Trans Am convertible (Car# CO99 ...

  1. #1
    Junior Member
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    Black
    1999 Firehawk TA Conv.

    Traction Control and P0121 SES problem

    Hello. I am a new member to this forum. I have a Black 1999 Firehawk Trans Am convertible (Car# CO99 for Firehawk fans) and look forward to checking out this great forum!

    So while on my drive from Toronto to the Dayton, Ohio Trans Am Nationals this weekend, the TCS light came on while at 70mph a few times as well as the SES engine light. The error code I am getting is P0121 which means "Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem" from my ODBII scan tool. Not sure where to start with that one ;-)

    I am assuming (and hoping) these two issues are related. Does anyone have any ideas. I am thinking it is some speed related sensor as the TCS light comes on after 60MPH. I checked the fuse for the TCS and it is good.

    Apreciate any help.

  2. #2
    Member lrader99's Avatar
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    flat black
    do you have a scan tool or a code reader?

  3. #3
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    Yes, as mentioned, my code reader spit out the following for error code P0121which means "Throttle/Pedal Position Sensor/Switch A Circuit Range/Performance Problem".

  4. #4
    Window Licker Sassy Cassie's Avatar
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    Just to rule out the obvious: What size wheels/tires are you running?

  5. #5
    Junior Member
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    Black
    1999 Firehawk TA Conv.

    Running stock 17" Firehawks.

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