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4th Gen Engine and Drivetrain-2010 and Up 6.7 liter Engine and Drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Codes

   
Old Dec 14, 2012 | 03:33 PM
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03 ant a hemi's Avatar
03 ant a hemi
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From: Alberta
Codes
What does code P21b2 signify? The truck has 48000km and has been throwing codes like crazy this is just the newest one.
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Old Dec 14, 2012 | 07:22 PM
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Busboy
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Found this posted by H&S tech support.

P21B2 EXCESSIVE TIME TO ENTER CLOSED LOOP NOX ABSORBER CONTROL .

Do you have anything disconnected without a tuner?
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Old Dec 15, 2012 | 01:06 PM
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03 ant a hemi
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Everything is stock. I read some with aftermarket intakes are getting this code. The dealer is pretty stumped
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