air suspension,the left front air suspension dropped, No codes, compressor works. Bag fills but not enogu to lift

My LF corner dropped. Air compressor works, no codes, high sensor is connected. The air bad appeared to be flat. I jacked up the corner and took opff the tire, then started the vehicle. The bag aired up, but not as "hard" as the rf. I sparyed the bag down with soapy water but didn't hear any leaks. I assume it's the selenoid or the orings.

Thoughts?

My car has 130000 miles.
My car has an automatic transmission.