I am having 2 issues with my truck since i did the head gaskets & new turbo. My problem is it throws these codes
P0103-Mass Air Flow (MAF) Sensor Circuit High Voltage
P0238-Turbocharger Boost Sensor Circuit High Voltage

Just trying to figure out why it is doing this & a fix or solution. Anybody ever experience these codes? if so what did you do to correct the problem.

i got it the same code once for p0103 actual still got it

Clean your MAF sensor. There is acouple of threads on that for that one.

Here is a thread for the P0238.

http://www.dieselplace.com/forum/showthread.php?t=72373

I got it all figured out & it had nothing to do with any cleaning,etc. Turns out with the big tune & big turbo the sensors can only read to a certain point under WOT. So the fix for this is to turn them off with efi. & wolla!! no more codes.