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Discussion Starter · #1 ·
Good evening:
I am experiencing an issue with my AC as follows; when I set it to 74° it blows cold but it never reaches 74. If I put it on auto the fan stops blowing all together and the cooling seems to just be intermittent. In either setting the temperature never reaches the setpoint of 74. I was diving in Key west when this problem happened. I took it to the local Chrysler dealer and they said that their diagnostic showed an error of B1107-15. They said they found a loose connector to the cabin sensor. I took them at the word and drove off heading back to Tampa. I got about 2 miles out of Key West and the problem started all over again. Does anybody have any specific issues with this error code and exactly what part or sensor was replaced? I’m taking my car back into the dealer where I bought it tomorrow. I would like to go in with a little knowledge.
Thanks in advance for any help or tips!
 

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The in cabin temperature sensor is behind the knee blocker panel, right behind that little grille near your right knee. The code is for that sensor circuit being shorted to battery or open. In other words, it's unplugged or not connected somewhere. The circuit is not intact, so the HVAC module can't read the in car temperature properly. There isn't much to the circuit. There is the temp sensor, the wires, and the HVAC module itself. It could be anything from a pinched/broken wire to a bent terminal, or a bad sensor, or least likely, a bad HVAC module. When you take it back they'll probably need to take a closer look.
 

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A Guy
 

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Discussion Starter · #4 ·
The in cabin temperature sensor is behind the knee blocker panel, right behind that little grille near your right knee. The code is for that sensor circuit being shorted to battery or open. In other words, it's unplugged or not connected somewhere. The circuit is not intact, so the HVAC module can't read the in car temperature properly. There isn't much to the circuit. There is the temp sensor, the wires, and the HVAC module itself. It could be anything from a pinched/broken wire to a bent terminal, or a bad sensor, or least likely, a bad HVAC module. When you take it back they'll probably need to take a closer look.
What a great response! This is exactly what I was looking for. Thank you so much!
 

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Discussion Starter · #5 ·

A Guy
Thank you so much for the manual pages! I have a factory manual that has been on back order for 6 weeks. I am going to take these pages with me today! You Da Man!
 

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Discussion Starter · #6 ·
I Just dropped of the car. I will let everyone know what the outcome is as soon as I get a call back from the dealer. Again much gratitude to "A Guy" and "BlackHemi41" for your responses and help.
 

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Discussion Starter · #7 ·
I just picked up the car. They said the AC unit was 17 grams low on the R1234YP refrigant and there was no DTC codes showing. While driving the car back home, the problem is still there as originally posted. I called the dealership back and they said it must be an intermittent issue with one of the sensors. They want me to bring the car back in for more "extensive" testing. Not sure whether I should take it back or just start replacing the sensors on my own. Any thoughts? Will keep everyone updated.
 

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I just picked up the car. They said the AC unit was 17 grams low on the R1234YP refrigant and there was no DTC codes showing. While driving the car back home, the problem is still there as originally posted. I called the dealership back and they said it must be an intermittent issue with one of the sensors. They want me to bring the car back in for more "extensive" testing. Not sure whether I should take it back or just start replacing the sensors on my own. Any thoughts? Will keep everyone updated.
Did they fix the AC leak and recharge the system?
 

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Discussion Starter · #9 ·
They claimed the car came with a low charge from the factory. They said they leak tested it and there were no leaks after they recharge the system. I apologize, I should’ve included that to my post earlier.
 

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They claimed the car came with a low charge from the factory. They said they leak tested it and there were no leaks after they recharge the system. I apologize, I should’ve included that to my post earlier.
No worries. That's not unheard of. Anyway, so it's still not blowing cold after a recharge? Even if you put it to max AC?
 

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Discussion Starter · #11 ·
Yes if I put it on LO and max fan. Any other setting where it has to regulate the temperature is when the issue happens.
 

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Your car no doubt has dual zone, does it act the same on both driver and passenger sides?

A Guy
 

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Another incompetent dealer. Let Dodge know of their claim that it left the factory with a low charge. I’ll NEVER believe that.
 

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If it was only on one side, I'd think it would be a clue. With it apparently being intermittent, I'd think it is likely a connector/harness issue. How they will locate it is the hard part. The troubleshooting methods in the manual of course assume a full time problem

A Guy
 

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Another incompetent dealer. Let Dodge know of their claim that it left the factory with a low charge. I’ll NEVER believe that.
Why do you leave stupid comments like this? Have you worked in a dealer environment? I'm guessing not based on a lot of your comments. You have a ridiculous grudge against dealerships and a general lack of understanding of how things go. Comments like this don't help us figure out the situation. Who cares whether you believe it or not, it has happened. So unless you actually get a clue of what you're talking about, don't bother commenting.
 

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Why do you leave stupid comments like this? Have you worked in a dealer environment? I'm guessing not based on a lot of your comments. You have a ridiculous grudge against dealerships and a general lack of understanding of how things go. Comments like this don't help us figure out the situation. Who cares whether you believe it or not, it has happened. So unless you actually get a clue of what you're talking about, don't bother commenting.
So dealers can fib and blame FCA without being called on it? What dealer do you work at.

Eh?
 

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So dealers can fib and blame FCA without being called on it? What dealer do you work at.
Neither of us know whether or not this dealer is fibbing. We were not there to witness it, so that's a premature conclusion to jump to.

In your first comment you implied that FCA is somehow unaware of this dealership's finding of low refrigerant charge. They absolutely would be aware, because it would have been submitted in the warranty claim, along with the printout from the R-1234yf machine which verifies it. Whether or not there is a leak, we don't know.

Where I work is none of your business.
 

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Discussion Starter · #19 ·
Gentlemen: I did not mean to cause an argument or to start a hostile discussion. I just contacted Mopar and they have informed me that there is a compatibility issue with the USB drive and my manual will not be shipped to me till January 2021. I would like to proceed and replace the in cabin sensor, but without a manual I'm not sure how to remove the lower part of the dash trim to get to it or if I need to remove the lower part of the dash to get to it in the first place. If anyone has ever done this on a challenger, I would greatly appreciate some directions and any tips. I am kind of hesitant to just start pulling on trim and such. Again much gratitude for your help and insight!
 

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Why would you buy and replace anything at your own expense in money and time?
It’s not functioning correctly so either go to a different dealer or make Chrysler send out an hvac specialist to go through the system and correct it OR replace it as it’s a lemon.
 
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