I am getting a fault code that states the Intake Air Temp Sensor (IAT) is either high or low voltage on my 2000 Grand Caravan 3.8L.

It is displayed on the odometer as fault code 23 = OBD-II code P0112 or P0113.

I know it is a thermistor that changes resistance as air flows over it. I read that the normal reading at 77 degrees is ~ 9k ohms. I'd like to check the connector first, and then measure the sensor to see if it is open or shorted.

But I can't find a single drawing or description of where it is located on the throttle body.

Can anyone help with this?

Also, if any of the info I have collected above is incorrect, please let me know.

Thanks...

RickMN

There is no IAT on either the 3.0 or the 3.8, only the 2.4. You've either misread the code or you've read the translation off the wrong chart. Get a code reader, they're more reliable.

mitchsc

Thanks Rick. Planning on doing so.

Interesting however, I called Autozone and they claim to have the part in stock for my year and engine???

The odometer code I am getting is 23. Do you know what that refers to?

vwe

Today my 2000 Dodge Grand Caravan 3.8L also suddenly displayed the check engine warning light with a code 23 = air intake temp sensor.

My mechanic is familiar with this condition (causes poor fuel economy due to misreading the actual air intake temp) and although he could not find an after-market IAT sensor, he found the Dodge part # and is going to order one. The IAT apparently costs around $25 and takes 15 mins to install.

mitchsc

Does anyone know exactly where this sensor is located on the throttle body? (2000 Dodge Grand Caravan 3.8L).

Or can you describe what it looks like? (# of wires, etc)

As I recall there are several sensors in that area.