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Thread: P2121 Code

  1. Top Of Page | #31
    Basic Member Johnny Rivera's Avatar

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    Re: P2121 Code

    Quote Originally Posted by Polaraco View Post
    Mine barely smokes. That could be whe's throwing the codes
    If it’s throwing a little bit of black smoke that’s fine. Now if it’s blowing white smoke then that’s a different story.


    No Matter Where You
    There You Are
    2012 Dodge Dually|3500 HD|MiniMax|Already Deleted|1st Diesel


  2. Top Of Page | #32
    Old & Grumpy! Polaraco's Avatar

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    Re: P2121 Code

    Quote Originally Posted by Johnny Rivera View Post
    If it’s throwing a little bit of black smoke that’s fine. Now if it’s blowing white smoke then that’s a different story.


    No Matter Where You
    There You Are
    2012 Dodge Dually|3500 HD|MiniMax|Already Deleted|1st Diesel
    White smoke is not good. It's either timing, sensors or injectors. I suggest you get some of the archoil.com injector cleaner and a bottle of the fuel treatment. Lets see if we can clean that up. If not, then we need to look into the sensors more closely. But an individual sensor will typically throw a legitimate code indicating it's out of range. An advanced scan tool would typically needed to see the parameters of the sensor. If that's not it, then you better think about looking into injectors. Contact Tim at Accurate Diesel or Clayton at @Dude's Diesel Performance. If you call Tim, tell him the guy with the Hugo sent 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

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