Intake Air Temperature Sensor

[wyldhog]

2019 Tahoe LT 5.3
My check engine light came on and it's showing P0097 "intake air temperature sensor 2 circuit low bank 1" and P2199 "Intake air temperature sensor 1/2 correlation". Can anyone tell me where this sensor is located? I cannot seem to find a diagram anywhere.

 

[Big Mama]

Generally in the air intake tube between the filter housing and throttle body. It may be on the backside of the tube where it’s hard to see.

 

[Fless]

It's built into (combined with) the MAF sensor, in the intake tube as @Big Mama indicated.

 

[wyldhog]

The MAF, ambient air temp sensor, air pressure sensor and air filter were all replaced a few months ago and I am still getting the same codes. I have unhooked the negative battery cable on numerous occasions but after a few miles the engine light always comes back on and shows the same code

 

[Big Mama]

Is your air cleaner and filter secure or do you have an aftermarket cold air intake? I would get this code anytime the filter on my CAI either came off bc the hose clamp wasn't tight enough or a portion of my intake wasn't secure. If all of that is good check the connector to the MAF for a frayed wire or a loose pin. Are there any other stored codes?

 

[wyldhog]

Stock intake.
Permanent stored codes are
P2199: Intake temp sensor 1/2 correlation,
P0097: Intake air temp sensor 2 circuit low bank 1,
P0096: Intake air temp sensor 2 circuit range/performance bank 1 and
P00F4: Humidity sensor circuit low.
Connectors to MAF are good

 

[Fless]

What brand is the MAF/IAT sensor? These trucks love the GM product much more than aftermarket.

 

[wyldhog]

GM sensor

 

[Fless]

If you can put a scanner on it that can read the freeze frame data for the codes that concern you, the data might show which element is out of spec, and how.

 

[wyldhog]

I'll give it a try... I'll keep this thread updated as to my findings. Thank you for all your help