P21B2 code keeps coming up.
- Thread starter Meg M
- Start date
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Burla
Senior Member
- Joined
- Apr 28, 2012
- Posts
- 27,472
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- Ram Year
- 2010 Hemi Reg Cab 4x4
- Engine
- Hemi
You have an aftermarket filter? Check tdr and cummins forums, they just have a lot more cummins to add to the info you get on ram forum. If it is a 2012, you are in the wrong generation as well. Generally a nothing code, if that is the only code I personally would ignore it, or change my air intake unless you have oem, then I wouldnt touch it. Keep running the codes though, if you get another related code you should take action.
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