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Thread: P2121 code

  1. Top Of Page | #1
    rob d's Avatar

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    P2121 code

    Ok I took my wife's 05 out today to run it and I jumped on it to blow the soot out and check engine light only thing I had to check it with was my bulldog and it came up (p2121 throttle/pedal position sensor switch D circuit range/performance) anybody know if this sounds rite? And I guess it's the TPS sensor that's bad? Thanks.


  2. Top Of Page | #2
    rob d's Avatar

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    Where you at Steve tell me what's wrong with this turd.


  3. Top Of Page | #3
    silentone3389's Avatar

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    Uh oh rob, you broke it

    My rig:

    01 Dodge Ram 2500 4x4 that I built. Mods: 8in Top gun customz long arm hit with 6in atlas springs in the rear, full bilsteins, 37s, fully built transmission with sun coast parts, full auto meter colbalt gauges, fuel pressure, over all boost, bottom turbo boost, tranny temp, egts, 4.10s, custom 3.5in intake horn, grid heater delete, II super dragon flow 11 hole injectors, Tst power max 3 comp smarty stack, twin double batmo wheel twins s362 62/68/14 over a s475 both with polished turbine housings, stainless diesel stainless steel polished exhaust manifold, fass 150 gph fuel system, aux tranny cooler, full pinoeer componet speaker system, flip out screen, 12in rockford fosgate power T2 sub wired to 1 ohm pushed by a 1000watt rockford fosgate ampAll comes together to be called the BDD

  4. Top Of Page | #4
    Old & Grumpy! Polaraco's Avatar

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    Replace the TPS. $400 Bucks. Seems to be a common problem with the 5.9's with electronics.

    BTW. . .That channel also runs the cooling fan. You could overheat like I did. Hence Electric fans. The fan codes come on and off.

    Clear the codes and see what happens.


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

  5. Top Of Page | #5
    Old & Grumpy! Polaraco's Avatar

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    Sheeesh

    I can't get my stuff done. LOL


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

  6. Top Of Page | #6
    rob d's Avatar

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    I cleared the code it runs fine until u jump on it then it throws the check engine light but it still runs fun with the light on.


  7. Top Of Page | #7
    Old & Grumpy! Polaraco's Avatar

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    OK Go ahead. Argue with me.

    Must be a flat spot or dirty spot on the potentiometer.

    Then don't floor it!

    That settled that!


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

  8. Top Of Page | #8
    rob d's Avatar

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    LOL I'm not Arguing with you just telling you what it's doing. You know I hate this dam truck. LOL I wish I never bought the 05 nothing put a pain in my a$$. LOL


  9. Top Of Page | #9
    Old & Grumpy! Polaraco's Avatar

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    05 is a good year. A bit better than the 03 with th ebigger turbo on it. The TPS is common

    I was funnin you


    2003- 3500 RWD Automatic.
    S & B intake, BD Intercooler, Pusher Air Horn, MM3 Double R Tuning, Turbo Timer, electric Flex-a-lite fans, FASS 95,
    50 HP tips, upgrade to 351 turbo, 3.42 gears, Twin air compressors, air bags, Remote dual oil filters, Hellwig sway bar, Front Winch. Home made Fuel Heater, BD Exhaust brake with Torque Lock. Tons of TLC

  10. Top Of Page | #10
    rob d's Avatar

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    LOL 05 sucks I should of bought another 06. The 06 has more miles been beat to hell and back. The 05 takes all my $$ just to keep it running LOL that's why I can't put more into my 06. LOL


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