Just got the truck out now getting code

[RedX001]

I just got the truck out today and I'm DCT-01 code. I put an EGR restrictor in it over the winter. Is this the code you get if you need to drill it out.

[Maxx]

Donno i will let someone who knows or has a decoder tackle this one. Obi should be able to being the designer of the EGR restrictor.

[OBI WAN]

Need a new code number cause they start at P0010. P0400's are EGR type codes.

[RedX001]

i rescanned the truck the code was P0401. Is this the one for the EGR? If it is do I drill the restrictor out larger?

[OBI WAN]

401 is low flow, take the restrictor out and drill the hole 7/32's unless is and old one with a 5/32 hole and make it 3/16's!

[RedX001]

Thanks for the help