HVAC 13/31 - 41 Trouble Codes

Subix · #1 07-12-2011, 01:11 AM

So my AC is acting up lately and sometimes not coming on at all. If I restart the car it may sometimes work but not always. Then if I shut it off, open the car hood and then slam it shut, it usually will come on when turning the AC on again.

Finally had some time to find how to pull the codes and they are:

13/31

i pressed auto after that and then it goes to 41 and sits there. I guess it's prompting me to do something at this point but I don't know what.

Anyways, what exactly is the PBR circuit? Is that part of my HVAC electronic controls section or possibly something else? I guess I'm only posting to see if someone has had this exact same code before and knew exactly what it is that is causing this fault.

Otherwise, I guess I will eventually take it to my local shop and give them the malfunction codes/guide to pinpoint the issue... I have no multimeter.

Earthworm · #2 07-12-2011, 08:25 AM

Do you see the rods move (near the gas pedal) when you change settings?

Subix · #3 07-12-2011, 02:30 PM

This is not to say it doesn't work at all. It was working last night on the way home, I shut it off and ran the test and this is what it came back with. I heard it cycling through the tests but I didn't look to see if anything was moving down there... I can take a look later though. I'm guessing so since it was working.... but intermittently so.

gbianchi · #4 07-13-2011, 05:07 PM

it was working.... but intermittently so. Slamming the hood, This shouts loose conector, can't say where it is cause I don't know, good luck...............G

Blacky · #5 07-13-2011, 06:05 PM

I also have code 13 and 41. My fan stopped working on Monday.

P.S. Doah! 13 is sun sensor and I was parked in the shade. Might be just a fuse.

Subix · #6 07-15-2011, 05:03 PM

Could this be related to the AC relay under the hood?

It is consistent now. I have to either open and close the hood of the car before the AC will come on (fan) or run over a bump and it'll come on. Otherwise, at night time... when it is cooler, it will come on without having to drive over something or slam the hood.

What other wires/connections should I look for?

Does anyone think it may not be a short/loose wire and could actually be the blower fans on their way out?