Can Any One Tell Me what a PD Or Po 421 Code Is on a Dodge 2006 mega cab



Thanks

TB

 

https://www.dieseltruckresource.com/...n&onlynewfaq=1
here is the link to the trouble code faq, but done see a po421 listed. be back in a second.

 

http://www.allpar.com/fix/computer-codes.html

claims it is a catalyst(convertor) warm up code for bank 1. doesnt make sense, that is for a v engine with dual convertors. but that is atleast what the p code is for.

 

Thank You ,I Could Not Find It Any where . This Happend at Warm Up ,Engine Light Came On so i Shut Off Engine & Pulled out The Bully Dog To See whats Going On . Reset Has Not Happend Again ? Also Had a P-2509 Code Before But Reset Never Came Back. This Truck So Far Has Not Been a Keeper ! My Trade it in for a New 08 Dodge Or GMC ! With All The Bad Luck Duramax Looking Better.
Do You Think Bully Dog Trip Is The Prob With These Codes ???


Regards
TB

 

sometimes there are nuisance codes that pop up, create no driveability concerns and never come back. These engines and systems are very complex and everything is bound to have glitches. As for the cure, cant help you there. sorry the truck is causing you so many problems that you are considering trading it in already.