HVAC code b11c5-11?

AARON BISHOP

MEMBER
2014 JEEP GRAND CHEROKEE
5.7L
V8
4WD
AUTOMATIC
179,000 MILES

I have a JGC Overland, it has dual climate zones. I'm always getting air blowing on defrost, it will switch to other vents but doesn't blow hard. I'm assuming that's because some of the air is still going to defrost. I hooked up my scanner and it gave me b11c5-11 for the code. Says mode door 2 (defrost) driver circuit shorted to ground. I don't know what part needs to be changed or where this is even located to check it. Is this different than the blend doors? I believe I have two of them, one on each side of the center area. Any help would be great!

3 Replies

JACOBANDNICKOLAS

MECHANIC
109,724 POSTS

Hi,

The code indicates a short to ground. So, it could be an internal failure in the actuator, the connector may have shorted, or we have a wiring issue.

Pic 1 below shows the approximate location of the actuator. The remaining pics are the removal and replacement of the component.

What I suggest is to access the actuator and inspect the wiring to it. Additionally, disconnect the electrical connector and make sure the pins are not damaged due to heat and shorting together.

If everything appears to be in good condition, replace the actuator. Chances are that is where the problem is coming from.

Let me know what you find or if you have questions.

Take care,

Joe

See pics below.

Images (Click to make bigger)