Code P0113

Tiny
DPENFIELD
  • MEMBER
  • 2006 FORD EXPLORER
  • 4.0L
  • V6
  • 2WD
  • AUTOMATIC
  • 135,000 MILES
So, I replaced a list of things in this SUV, and I finally got rid of all the codes except I'm down to p0113. Replaced the mass air flow sensor which also contains the IAT. The air filter is brand new. I also replace the wiring harness connector that goes to the MAF. And I still can't leave my parking lot without the wrench light coming on and then maybe I have a minute after that before it does, and I don't know what else to do. Because of this I haven't been able to work for 3 months. The person who had it before me said he took care of it and to him that was parking it in a garage for 5 years with the emissions light on. So needless to say, I've pretty much replaced about thirteen different things in this vehicle I don't know what to do now and I'm exhausted from this and because of it I've about to lose everything it's destroyed me financially. It's gone to a repair shop I paid $700.00 for a massive gas leak and not even 24 hours later it shut off on me twice but everything else has been fixed. I just don't know how to fix this or even where to start to try to fix it. And what do I do about an ABS code c1991? Can't find any information anywhere. Its module calibration failure does that mean I need a new module or I'm going to have to take it in for somebody just to calibrate it?
Oh, and I did a PCM clear by hooking a jumper wire to the battery connectors and I let it set for quite a while and turned it back on. Before that, the fuse kept blowing but after I did the clear the fuse didn't blow anymore but that code still comes up. Oh yeah, and one more thing after replacing everything with the engine on and running my scanner isn't even able to recognize that I have a MAF. For MAF it says zero and for IAT it says -40. Doesn't change no matter what I do and that's with everything new and replaced it still reads as nothing
Wednesday, September 29th, 2021 AT 12:37 PM

3 Replies

Tiny
MASTER ASE TECH
  • MEMBER
  • 82 POSTS
Hi, I'm Dan.

The IAT and the MAF are the same part, so they share the same circuits. Usually when an IAT shows -40 degrees, it means it's unplugged or not responsive. (Open circuit).
You should check the wiring going to the MAF/IAT sensor. Check for 5 volts at the sensor and be sure to check the ground too. I've attached a wiring diagram and the location of G103, the ground point for that sensor.
A good test would be to disconnect the battery and OHMS test the circuits end to end. It really sounds like you have an open wire somewhere.

https://www.2carpros.com/articles/how-to-check-wiring
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Wednesday, September 29th, 2021 AT 2:05 PM
Tiny
DPENFIELD
  • MEMBER
  • 3 POSTS
I checked all the grounds before just out of habit and they're all great including that one you mentioned. I'm going to check the wiring coming from the grounds and it was fine too. And does this have anything to do with what I'm dealing with? Once again, I keep blowing a fuse that I wouldn't think has anything to do with this but every time I start the SUV it blows. It is the number 40 fuse which is for fan clutch PCV valve A/C clutch relay and GCC fan?
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Wednesday, September 29th, 2021 AT 5:34 PM
Tiny
KASEKENNY
  • MECHANIC
  • 18,907 POSTS
I doubt this is related with this fuse issue, but anything is possible.

I would suggest chasing this code down first and find out if the fuse issue corrects itself as well.

If it does not, then we need to get a new post started for that issue.

However, I am attaching the exact steps for this code. Clearly you are seeing the issue when you are looking at the MAF and IAT as they are a combine sensor. So, this is an open circuit issue, it is just a matter of finding it.

If the sensor is new, then I agree that it sounds like a wiring issue.

However, I attached all the testing below.

Please run through this and let us know what you find. Thanks
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Saturday, October 2nd, 2021 AT 6:17 PM

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