Medium and Heavy Trucks
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Hi I'm Wayne
I will help you with this
Code P 1421 is clogged or dirty Catalyst (muffler)Code P 1422 is Temp. Sensor Has Failed ( this is exhaust manifold, or muffler pipe This will set off engine warning Light, Poor accelerationand no power
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Manual yes and No
it is basic info as you are finding out
I suggest you replace the Temp sensor
this will solve your your issue
Thank you for that
it would be the rear one
That should have cleared it
I am going to opt-out and send back to the board for another
expert, don't reply or rate me as that will lock the question back to me
Sorry I could not help you
Hi Gregory, Its Dan. If the DPF is serviced and the sensors and harness are confirmed good the next step is to have the ECM reflashed/reprogrammed with the most current updates which will also reset the system and then see if the faults return indicating there is still an actual problem. Sometimes a software update/reflash is needed to reset the system. Let me know
Hi Gregory, This site is for informational purposes. We are here to help answer your questions. We are not employees of the site but users of the site just like you are. Your deposit sits with the site not the experts answering your questions or taking the time to try to help you. neither of us got paid a dime for our time helping you. Experts get a percentage on positive feedback and accepted answers so when there is no rating the experts do not get paid. My answer is what needs to be done if you have confirmed your repairs are complete but the ECM is not resetting on its own after an attempted Regeneration. Your question history and rating history remains with the site for all experts to see and I do know that there are some on the site that got some great help and technical info from experts but have a long history of never rating and they over time have a tough time getting the experts to spend the time to help them. It is a great tool to have when you can access many years of experience a knowledge on the site at a lot less than an hours diagnostic charge at a shop. Either way. No one has been paid here and your deposit is with the site. Good luck to you sir.
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What is the full chassis model and engine make and model? Ill have to see if my books have that information. Experts arent employees of the site so I will have to check in between jobs as time allows. I help on here evenings, in between jobs, some weekends as time allows.
Hi Did you get this resolved?