I had the same symptoms as the OP, without the battery problems. Bypassed the AC cycling switch and I had cold air. So, thanks for the thread and to everyone who pitched in. My wife will be quite happy to have her AC back. Now to find a good deal on the part.

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It may be that your only purpose in life is to serve as a warning to others.

06 CRD Sport
Built 5/11/06
Jeep Green
Rocklizard diff cover
V6 Airbox

WWW.MOPARONLINEPARTS.COM has been the cheapest I've found...I just bought my timing belt parts/waterpump/thermostat all for under 600.00 shipped. Here's the link to the parts catalog: http://www.moparonlineparts.com/partlocator/index.cfm?siteid=214954

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Previous-05 CRD KJ;Current-2010 Taurus SHO Twin Turbo (450HP), 2014 Subaru Forester Turbo (stock)

Here's a pic of that dang sensor. Looks like part #05170126AA FWIW. And just in time for what appears to be an unusually warm weekend here!

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Little Mack---06 Atlantic Blue CRD Sport born 5/17/06, rescued 7/31/06
Mods: Daystar 2.5" Lift, OME Long Travel Shocks and HD Struts, Firestone Destination AT's (245/75R16), Fumoto Drain Valve
Gone but not forgotten:
97 VW Passat TDI
89 VW Jetta diesel
540,000+ diesel miles since 12/89!

Never a good time, or a bad time for a leak. Any refrigeration system can leak new or old. Only way to find out is to put on a gauge and check the pressures. Is the compressor short cycling on the LP control?

Edit:

Should have read the entire thread, but the way those compressors short cycle in the winter with the heat on, I am not surprised the LP switch failed.

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20 year owner of Libby CRD!
2006 LTD Bright Silver loaded with all the needed mods, CCV intact.
Equipped with HDS thermostat, plenty of heat, faster warm-ups, increased fuel mileage.

Glad you got it figured out. Hopefully this one will last longer. I noticed that regular parts stores like autozone carry that sensor when I was looking for pics online. If It goes out again, I'd try a different brand. Usually OEM is better quality than aftermarket though. Good luck!

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Previous-05 CRD KJ;Current-2010 Taurus SHO Twin Turbo (450HP), 2014 Subaru Forester Turbo (stock)