Yes. Most likely this is the module at this point. These sensors operate by sending an RF signal to the module and the module places them based on signal strength. I attached the process to teach them each position but this is if they are all registering their IDs, which it sounds like the module cannot retain the left front.
If you want to be sure, you can go to a parts store and have the DTCs pulled. Most likely you will have a code for the left front and most likely a second for a circuit issue. If you want to pull the codes and let me know what they are, we can help confirm this prior to doing the module.
Images (Click to enlarge)
Friday, April 19th, 2019 AT 5:40 PM