Renault Megane II 1.5dci: Error DF049 (CC.O) - Climate Control Sensor Location & Availability

Hello, I have a problem - in my Megane II probably does not work the climate, after switching on the compressor or the fan does not sound - and the temperature in the cabin does not change, after propping under the clip crashes DF049 CC.O flashes in red.
Where is the sensor located? And is such a sensor available at all? New or used?
Because the error I read well - means a short circuit to the mass. So the sensor probably fell. So I would like to know where it is located? That I could remove it, or order it in the store or used on the Allegro.

If there is air conditioning, there is a pressure switch, if there is no controller configuration error.

As I remember correctly, the pressostat in megana is on the tube coming out of the radiator of the radiator (between the radiator and the dryer). I do not know if you will get to him through the middle lower dummy but it should be able to do it from below.
First check the amount of refrigerant because the pressure switch works on the principle of shorting and opening the contacts depending on the pressure.
If it turns out that you need to replace the pressure switch, I do not know if it is on the valve so I would prefer to first charge the agent so that it does not fly out.

Okey, I'm fine - thank you so much for the answer. Probably the only topic on which no one is picking on.
- check everything as you describe bula_wrz

Hi Sensor on the tube - from the air-conditioning radiator - had rusted contacts and the plug also rusted at the contacts. To replace the sensor and plug - And the AC unit works !!