Rawze.com: Rawze's ISX Technical Discussion and more

I’m getting this code engine intake manifold #1 pressure voltage below normal, or shorted to low source
SPN:102
FMI:4
The diagnostics that my truck has is saying boost pressure
Any idea.
Thanks
2013 w900L
Isx15 550

bad IMAP sensor or not plugged in all the way?

That fault (123) is almost always a failed IMAP sensor. Worth changing regardless if you don't remember doing it in the last couple of years.