DLB AC_High_Side_Pressure 6525.8 psi

[DVT873]

This is one of MANY Dumb things Navistar has done.
AC_High_Side_Pressure
Location and pin 1600-B12

Open circuit for air conditioning
high side pressure sensor wiring
on any wire, failed sensor, or
short to ground on the signal wire
6525.8 PSI. No fault code is
generated by this condition

This is from a Navistar tech letter IK1900207. To see this part it has to be REV 10. This is on the last page or two. I found some copies online but can't find a high enough revision level. I can post a copy with Rawzes permission.

NAV apparently never set up a normal code for problems related to the high pressure circuit so this was the work around but it was YEARS before they bothered to tell anybody. And you only see it if you have DLB and are looking at that page.

I think I posted about this before but can't find it.