Yes. On 2010-up cars, there is only an intake air duct in the left rear cargo compartment panel. It is the air intake for the battery cooling fans and the plastic is molded to say: "DO NOT BLOCK." On earlier cars the rear A/C evaporator and some ductwork and actuators and a filter are contained in there, along with a vent in the rear driver's side window for air intake. All gone in 2010, Ford neutered the system and therefore functional cabin A/C is even more important on these years.

The A/C on the 2010-up cars is all electric, including the compressor, and the main cabin A/C system is the only thing running to provide active cooling to the entire passenger compartment, which includes the HVTB through the duct in the back. I label it as a vent but it's actually an intake duct.

Here's a picture:

 

https://forscan.org/home.html

Russian software. Preferred scan tool is a laptop computer but you have a choice because the software runs all the way back to Windows 2000. If you buy the 1-yr extended license, I recommend PAYPAL.

Use one of their recommended adaptors. I use an OBDLink EX USB, no Bluetooth, no nothing. Direct connection to the laptop via USB.

https://www.obdlink.com/products/obd...x/?ref=forscan

 

Upon install of battery (car fired up, but a wrench and check engine light followed), i got 4 codes (I think a couple are just system repeats)

p0a81-00 Hybrid Battery pack cooling fan control circuit

p0a89B-00 Hybrid Battery Temperature sensor circuit

P0a81-60 Hybrid battery pack cooling fan control circuit

p0a9B-60 Hybrid battery temperature sensor circuit

Wondering if I forgot to plug something in or if these fans are just faulty. I’ve heard they can be.

 

Bad fans. Search for those codes on the forum and I think you might have to replace them both.

 

And the temperature sensor codes come along with them?

 

I've not had them personally but it makes sense. You're getting the Wrench and Check Engine simultaneously, and the codes are saying temperature and fan. It sounds like a logical place to start. The computers disable EV mode when the pack goes over 100 degrees F, I believe, and over 130 or so actively kills the HV battery pack.

 

Only thing is it was disabled right when the car started, but I would assume that’s valid with the fans being bad, even if they didn’t go up to temp.

 

You can try clearing the codes again. If the P0A89B-00 repeats after the codes are cleared, Ford says: "Replace the HVTB." More specifically:

"If DTC P0A9B is retrieved and the powertrain malfunction indicator (yellow wrench light) is ON, CLEAR the DTCs and REPEAT the self-test.
If DTC P0A9B is retrieved again, and the powertrain malfunction indicator (yellow wrench light) is ON, INSTALL a new HVTB . REFER to High-Voltage Traction Batteryin this section.
If DTC P0A9B is not retrieved again or if DTC P0A9B is retrieved again and the yellow wrench light is not illuminated, RETURN the vehicle to the customer - no problem found at this time."

I recommend you subscribe to the Ford Motorcraft site for 72 hours ($21.99) and reference the manual for your car. There is a detailed and specific pinpoint test for the P0A81 code involving the 40-pin C4227A connector.

FIRST: Check Fuse 15 (50A) in the Battery Junction Box. If the fuse is OK, then you need to move on to the next steps in the test. If the fuse is blown, install a new fuse. There is a way to command the fans to turn on and check if they are operating but I have never done it and don't know if FORScan will.

My best answer at this point is: try the above first. See if you can determine whether the fans are operational. Check to see if the 50A fuse is blown (there aren't many 50 amp fuses on this car.) Then set the service plug on the HVTB to the service position and try disconnecting and inspecting then reconnecting the 40-pin C4227 connector. After that, spend the money and read the service manual, Section 414-03: High Voltage Traction Battery.

https://www.motorcraftservice.com/

 

Here is the pinpoint test for P0A81. It's a little blurry but it's the best I can do for you right now.

 

thank you for this. It was just a blown fuse.