Hi all. 
 

long time lurker, first time poster. 
 

my 2012 superb that I purchased last year started having an issue with the AC, it wouldn’t blow cold air and it was making a hissing noise under the dash which eventually stopped. 
 

I had my car in for a service yesterday and he provided me with the scan results. There are 2 errors relating to the climatronic control module with error number j225, image attached. 
 

I did have the AC looked at just before Christmas which confirmed that the gas was fine, but he insisted that the compressor needs replacing as this was a common fault. But wanted it checked out first. 
 

anyone seen this one before or could shed some light on what the issue is or part that needs replacing? 
 

cheers!

I wouldn't replace the compressor, until the issue with communications to the climate controls is fixed.  You'll swap a compressor possibly for nothing.

 

Either you will need to investigate the loss of comms, or get it off to auto electrician if not.

 

Without functioning Comms from that unit, the AC compressor will never be commanded to function, so you won't have any working AC.

 

 

p.s. if the gas levels are correct, I hope you don't have a dead 🐍 on board.

1 minute ago, varooom said:

I wouldn't replace the compressor, until the issue with communications to the climate controls is fixed.  You'll swap a compressor possibly for nothing.

 

Either you will need to investigate the loss of comms, or get it off to auto electrician if not.

 

Without functioning Comms from that unit, the AC compressor will never be commanded to function, so you won't have any working AC.

 

 

p.s. if the gas levels are correct, I hope you don't have a dead 🐍 on board.

Thanks for the info. Is the climate control controller located in the control unit in the dash, with the dials and button etc.?

3 minutes ago, jwm1990 said:

Thanks for the info. Is the climate control controller located in the control unit in the dash, with the dials and button etc.?

Yes J255 is your actual dash control unit with heater controls, so you are spot on.

The gateway is usually not too far away, not sure without checking where that is located (it has in the past been on the centre tunnel near gearstick)