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How do I fix P2BAC in 2011 Dodge Ram 2500 6.7L Cummings Diesel?

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How do I fix P2BAC in the 2011 Dodge Ram 2500 6.7L Cummings Diesel? Check engine light on on/off, reset codes and it comes back on.

Vehicle: 2011 Dodge Ram 2500 6.7L Cummings

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P2BAC  - NOx Exceedence - Deactivation of EGR

This is a information code only, that there is a engine performance trouble code.P2BAC causes the engine power  to derate. Until the DTC codes are addressed.
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P2BAC Dodge Code - NOx Exceedence - Deactivation of EGR
Read more: https://www.autocodes.com/p2bac_dodge.html

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