It sounds like the low side pressure switch is out, but can I ask what is the low side pressure readings are with the system off? Also, please check the HVAC fuses # I have listed in the images below, this guide can help as well:
https://www.2carpros.com/articles/how-to-check-a-car-fuse
Here is the low side pressure sensor location so you can make sure it is plugged in, and the connection is good.
Please go over this video as well:
https://www.youtube.com/watch?v=4EqdrBVb0sY
and
https://www.youtube.com/watch?v=4UjfQKvrB6Y
Check out the images (below). Please let us know what happens.
Images (Click to make bigger)
Wednesday, May 14th, 2025 AT 11:54 AM