What you posted is just a snapshot of a brief moment and doesnt really tell the whole story.
That 90 deg IAT reading could be normal depending on certain conditions.
Too many variable to know if something is wrong.

Try taking a reading first thing in the morning when engine is cold. IAT should be close to ambient temps. Then take a reading while driving, engine fully warmed up, and cruising at a steady speed.
I would say that normally your IAT should be 20-30 deg higher than ambient but if your engine is fully warmed up, just idling and not moving (no air flow through intercooler) IAT can be much higher. If you A/C is on, IAT will be higher.
Especially if you shut it down and then started it back up 20 min later, heat soak will definitely make your IAT much higher.
But once you get moving again and air is flowing through the intercooler, IAT should come back down.

My IAT reading this morning, engine fully warmed up:
ambient temp: 55 deg F
cruising at 60 mph: 76 F
accelerating up a hill: 100 F
stopped at traffic light: 85 F
cruising at 40 mph: 72 F

_________________
U.S. Army Retired

Some more info on the air inlet pressure sensor for those who have not seen my previous posts.
I have a P0105 code error, which indicates a discrepancy between this sensor and the barometric pressure sensor in the ECU. This sets the MIL and puts the Jeep into limp mode. Won't go over 3,000rpm and lots of slip in the transmission. Can clear the code, and the car drives as normal provided you do not let it idle for the thirteen seconds it takes to reset the code.
I believe the GDE tune eliminates this circuit.
John

Gents, I have the same operating symptoms ie the limp mode which I have not resolved. Code is P1202 however those components appear to be in order. So reaching for straws . The vehicle runs fine first thing in the morning but after a 15 minute shut down it has only one decent acceleration then goes into limp modes.

I realize code you are addressing is very different. Just replaced engine and have limited knowledge of its history and the computer operating system.

The innova 3100 obd scan gave the following freeze frame data
Ect 67 c
Map 187 kPa
Eng rpm 2259
Spd 42 kph
Iat 49 c

Ambient temp was about 0 c. So a large delta to the IAT with engine ha I g been shut down for 15 minutes.

P1202 is a fuel rail pressure problem.
Make sure all your injectors are properly connected and purge the air out of your fuel filter head. If your fuel filter is old, replace it. If fuel is leaking out of either of the two wire connectors above the fuel filter, replace the fuel filter head.

_________________
U.S. Army Retired

Thanks Flash, I will carry on with the P1202 on another thread so as not to diverge from the IAT theme here.

Regarding the IAT noted above it is 49 c when ambient was about zero. Odd thing about the limp mode experience is that the vehicle runs just fine for the first trip of the day, although that has only been a couple of miles.

I would think the IAT tracks closer to the ECT given the turbo air is passing through the rad heat exchanger.

GTO