I'll start off with saying that this is my first post on any forum so bear with me. Usually I can find the solution reading different threads but this particular problem has me stumped.
So about a week ago I noticed my fuel pump was staying on after I shut my truck off and eventually drained my battery. I charged the battery, started the truck and the problem went away (not sure if it's relevant.) Truck ran fine for about a week then one day I start it, runs for about a second or two then dies. I checked the codes and got P0113, P0123, P0222 and P2135. I cleaned TB with rag. Sensors and cable pass a visual test other than that I'm not sure of their condition. Someone on a thread suggested doing a reset on the TB by turning key on without cranking, slowly push pedal to floor then slowly release pedal, turn off key then crank truck. I always thought you did that to turn off oil check light. Either way it seemed to work for 5 minutes. I kill the truck and try to crank it again now the problem is back. Battery is in good shape. Not sure on alternator since the truck won't run long enough for me to test it. I'm wondering if it's a pcm issue or something to do with the IAC/Throttle body or faulty TPS and if so how to test it. I guess I can check oil pressure to rule it out? For all I know it could be bad gas but it seems like a voltage problem looking at the codes. I've read that everything from key malfunction to vacuum leaks can lead to this so I'm open to suggestions. I got the engine to run by spraying sea foam in the TB and continuing to spray while it gets to idle. Drove around a few minutes just fine, come back home and kill it. Try to start up again and the problem is back. Now I'm here scratching my head. Sorry for rambling I just want to get all the details I have out there. I'm willing to check ohm's/resistance and such. I can get additional information if needed. Any suggestions about the codes or anything really, will be appreciated.
2012 Dodge Ram 1500 crew cab hemi sport edition. 97,xxx miles

 

Will the engine stay running if you give it a bit of gas? (pedal)

 

The gas pedal seems to have little effect on it. It's stay running for about a second or two wether it's floored, depressed a little or not at all.

 

And that's drive by wire, is it not? I am just not familiar with those systems.......

 

Yes it is drive by wire

 

Is there an IAC motor in there as well?

P0113 Intake Air Temp Sens Voltage Hi
P0123 Throttle Pos Sens Voltage Hi
P0222 Idle Validation Signals Both Low
P2135 Throttle/Pedal Pos Sens/Switch A/B Voltage Correlation

I think you have a short in the wiring somewhere....... May want to have a look at the engine harness, and see if it hasn't been damaged somewhere....

 

Yea the IAC is built onto the TB. No way to remove or clean it. I looked at the harness and seen no damage but I guess I won't know until I have tested everything.

 

Yea the IAC is built onto the TB. No way to remove or clean it. I looked at the harness and seen no damage but I guess I won't know until I have tested everything. I wanted to test the IAC 6 pin connection but couldn't find instructions anywhere how to do so such as pin 1 to pin 3 should read 5 ohms and things of that nature.
Any idea where to find that info?

 

http://www.dodgeproblems.com/trends/tipm/

 

see my post below, tipm failure.