00819 - High Pressure Sensor (G65)

Last summer I had my air con regassed by skoda after i confirmed using VAG COM it needed regassing. All seemed to be working fine but now when i turn on the air con it isn't putting out very cold air so I checked with VCDS yesterday and it generated the following code

00819 - High Pressure Sensor (G65) Signal too low. I did find some information on this code on the ross tech website and it mentions a faulty sensor or wire.

On speaking to a mechanic he suggests it could even be the air con pump. I am getting it looked at this week but would like to know please (if anyones had experience with this) if these are plausible explanations for the error and what the remedial work is likely to cost and entail?

I don;t know how accurate this is but here's the info i found

http://wiki.ross-tech.com/wiki/index.php/00819

thanks

Edited 19 April, 201115 yr by newskoda