LB7: P0238 and P1781

JustinD

JustinD

Plow Truck
Nov 21, 2008
2,067
0
36
42
Tiverton Rhode Island
Just did #2 injector in my truck, now it feels like a slug and has P0238 and P1781 doesn't have a check engine light but if I scan it they come up?? Makes a higher pitch whine and my gauge says 48psi??????? Did we screw something up doing the injector I don't know where to start to look.
 
JMK777

JMK777

16's, but i keep em clean
Mar 20, 2008
1,433
5
38
Moss Beach
0238 can be taken care of by increasing boost limmiting scale in b0202 (worked for me).
and the 1781 tcm/ecm commications, you should check batterys,ground and battery connections.
 
JustinD

JustinD

Plow Truck
Nov 21, 2008
2,067
0
36
42
Tiverton Rhode Island
P1781, I just reflashed my TCM and it went away didn't return........ P0238, found that the PPE boost valve was plugged solid, must have been from the rubber hose breaking down??? But all is well now and I am waiting for my new turbo kit to come in!!!!!!!!
 
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