Since the AC system is pretty much the same in all cars, i suppose some other car's sensor would do the job if it fits physically.
I suppose the sensor operation and values are pretty much the same anyway.
Maybe some early Laguna/Megane sensor might fit, i don't know. All i know is that mk1 C5 sensor is different.
There is a valve that prevents the loss of refrigerant when the sensor is removed so the physical dimensions are important to open that valve.
A different kind of connector isn't a problem as long at has 3 wire and that it is actually a sensor, not just a switch.
The original sensor has following markings:
- Opens with a 19mm key.
- inside theres a 10mm coil finer than M10.
- the sensor side opening is 11mm, the coil starts at 5mm depth
- the distance from the end to the pin in the middle is 11mm, 13mm to the pin's "spokes"
- outer diameter of the sensor side connector is 17mm