2G Manufacturer's DTC

[spyderdrifter]

This last Friday I went to the store after work and my talon drove fine. When I left, it barely ran, had a horrible time trying to idle, and could barely build enough power to drive up a hill. When I got home, I found the vac line to my fuel pressure regulator had popped off. I reconnected it and my car has been fine. However, during that time, the CEL came on and my scanner reported no codes the first time. After I got home, I had a P00AC code that stated it was manufacturer specific. I can't find any info on this code anywhere. Found P00AB relating to the IAT sensor, but that's it. Today at work I used our SnapOn scanner and it doesn't evenist that code as being active, stored, pending, or history. Scanned it with my BluePoint scanner again, and it still had the code as active. Any ideas?

 

[Rollie73]

https://www.obd-codes.com/p00ac

This article states that it is IAT sensor code as well. Don't take my word for it though......Im just figuring out all this stuff with these DSM's and Im not even sure if we have IAT sensors.......

 

[spyderdrifter]

I've been messing with these cars since '03, and I'm not even sure if there is an IAT sensor either, but my scanner does show a value for IAT on the live data.

 

[DSMPT]

Im not even sure if we have IAT sensors.......

I'm not even sure if there is an IAT sensor either, but my scanner does show a value for IAT on the live data.

The IAT sensor is located in the MAF sensor. The red/blue wire in the MAF connector.

 

[spyderdrifter]

So to "replace" the IAT, the MAF itself must be replaced right?

 

[ThunderChild]

Yes unfortunately. I would test the sensor and harness first to be sure. You could always switch to a GM IAT with some simple stuff if you have ecmlink.

 

[spyderdrifter]

No Link planned for this car unfortunately. The one I'm restoring will get Link.

 

[DSMPT]

So to "replace" the IAT, the MAF itself must be replaced right?

Yes but it still could be just a loose MAF connector or some pin. Clear the code and check the MAF connector if all wires has a good contact. If the code would come up again then probably you need to replace the MAF.

 

[ThunderChild]

No Link planned for this car unfortunately. The one I'm restoring will get Link.

Pm me if you need a maf.