Turbo boost sensor/circuit failure?

[98_crew_6.5]

CK engine light on - scanned at Autozone (reliability?) and code reads a faulty Air Intake temp circuit and Turbo boost sensor/circuit failure.

At issue is the Intake Air temp circuit is in the plenum going to turbo - but no plug is conncted - and cannot see where it came out of harness. Turbo/Boost sensor is in plain sight for replacement. Looking for schematic for Intake Air temp circuit/plug.

98 3500 automatic Crew cab, long box
184k miles.

Thanks !

[greatwhite]

Easy on the boost sensor replacement there Tex!

When he wastegate solenoid goes bad or the turbo wastegate isnt working it can set the same code.

Check to see if the rest is working right first.

Do you gt a lot of black smoke on acceleration?

[More Power]

Multiple sensor codes could be due to the 5-vdc reference generated by the PCM (and distributed by the related circuits/grounds), and not necessarily due to a series of faulty sensors. Check the 5v reference and grounds for the sensors.... Jim