superbdiesel
New member
- Joined
- Aug 9, 2007
- Messages
- 1
I'm getting 3 check engine light codes from our 05 gmc W/ Duramax. We resently perchased a dual 4" turbo back system from RPM Outlet. After installing the system W/O cat we recieved these codes:
PO299-Turbo under boost
PO401-Egr flow insufficient
PO404- Egr flow Ckt range/perf
Engine model # 5GMXHO6.6591
Please e-mail me with the fix if possible.
Thanks
PO299-Turbo under boost
PO401-Egr flow insufficient
PO404- Egr flow Ckt range/perf
Engine model # 5GMXHO6.6591
Please e-mail me with the fix if possible.
Thanks