2005 Duramax. Banks ottomind with pda and air intake.Just installed pda and got 4 trouble codes p0401,p0404,p1093 and p1626.Need help! Any ideas or fixes.Thanks

 

Hey Pacecar, First off, let me welcome you to DieselBombers!


Just so you know, you can check all of your OBDII Codes right here on the site

https://www.dieselbombers.com/codes.php

P0401 is Exhaust Gas Recirculation (EGR) Flow Insufficient

Generally caused by a free flowing aftermarket exhaust, not to be too worried about.

p0404 is EGR Circuit Range Performance

Could mean there is an issue with the EGR system

p1093 is Fuel Rail Pressure Low during Power Enrichment

This just means your fuel rail didnt hold the pressure needed while you were flogging it. It can often times be easily solved with a very inexpensive shim kit. I did a write up on how to do it. The Writeup can be found by clicking this link>>

https://www.dieselbombers.com/06-07-...t=PPE+Shim+kit

and p1626 is Theft Deterrent System Fuel Enable Circuit.

Im not sure what caused this code, as Ive never seen it before. But no worries, let me do some researching and I will see what I can find.

 

Thanks Oilfield Mafia for the help.After I wrote that post I found I could check my I own codes ,sorry.I don't have aftermarket exhaust yet, so I don't know what that code means?I heard I could block off the EGR ,is that a good idea?I'll try that shim kit.Thanks for the help and ideas. Keep them coming.

 

No problem bud


Blocking your EGR system is a very good idea. It helps keep everything clean. I did a DIY Writeup on that too. Here is the link to that

https://www.dieselbombers.com/06-07-...BZ+EGR+Blocker

Another great mod to help keep the motor clean is re-routing your PCV

Here is the writeup on that

https://www.dieselbombers.com/chevy-...BZ+EGR+Blocker

Something to remember when you block your EGR, it will continue to throw codes. But, most places that you can order the EGR Blocker from also have a fingerstick you can buy to prevent the truck from throwing the Codes. Also, there are several programmers out that will block the code without using a fingerstick. The PPE will and EFI Live will. Im sure there are some more out there.

If you decide to get the fingerstick too, Johnny did a writeup on how to install a fingerstick.
It can be found here >> https://www.dieselbombers.com/04-5-0...BZ+EGR+Blocker

Happy Bombing Bud!

 

oilfield_mafia i have a 2007 duramax LBZ with a bullydog and every time i set to extreme and flored i get a code p0087 fuel rail/ system presure low is thsi the same as the p 1093 that you were talking about and can i fix it with the shim kit?? thanks

 

try changing your fuel filter first, lbz's dont really have a rail pressure problem

 

I changed the fuel filter because one of the time that the check light came on i checked and is said p0087 fuel rail/ system presure low and the other code said check fuel filter so i changed it and the only thing that comes out now is the p0087 fuel rail/ system presure low and it does it every time i put it in extreme and flor it what should i do????

 

bottle test it.

 

How do i bottle test it?????

 

on the fprv underneath the glow plug relay box at the back of the driver side rail there is a little U shaped hose that comes out from the end of the fuel rail to the fuel return.

you can pull that little hose and attach a longer hose to it and connect the other end of the bottle and rest it in a snig spot under the hood and go drive it you stole it. if theres any fuel in the bottle shimming the fprv will help fix that