Air con help

[Jons1001]

You need to remove the gas to replace the pressure sensor too.

Thanks, most other forum posts I have read say otherwise though? Unless the pressure sensor has failed at the seal so is leaking gas.

Anyone clarify?

[FJB]

You do not have to remove the gas, the sensor is screwed onto a self sealing valve when removed. Just remove and replace, no gas will escape!

[Shoduchi]

You do not have to remove the gas, the sensor is screwed onto a self sealing valve when removed. Just remove and replace, no gas will escape!

Oh, I didn’t know that. When I had mine replaced I didn’t see the valve. Thanks for clarifying. 

[GVK]

I thought that the pressure switch was on like a schrader valve so you can undo the switch and the gas doesn't escape - maybe wrong been 10 yrs since I did one at least. lol.

[maxamplitude10]

Hi does anyone have the VW part numbers for the 2 components mentioned?
Cheers
Max

[GVK]

I searched for a 2008 car - 1K0 959 126 A VAG Pressure Switch, air conditioning number 18 here

https://volkswagen.7zap.com/en/rdw/golf+variant+4motion/golf/2008-625/2/260-260041/#18

It appears that the N280 is part of the compressor, can't see it listed seperatley, but can get it from Autodoc aftermarket.

[Jons1001]

I've got the pressure switch coming any day now so will let you know if this solves it for me. If not gona buy the solenoid.

[nicolacam]

Fixing stuff like this is a nightmare.

[wertyhas]

I still can't fix this.

[maxamplitude10]

Code 16 not activating.

I know the high-pressure switch is common on mk5s.

Is there any fault codes in hvac?

https://euroautotraining.com/blog/late-model-vw-ac-compressor-shut-codes

16 = Compressor off (activation A/C Compressor Regulator Valve -N280- implausible)

N280 fault maybe then?

Thanks, is there a way of testing the n280? Also I did have my thermostat changed around the time this happened, now wondering if this could have been disturbed/left unplugged etc.

This is very interesting as my Air-con decided to stop cooling at the same tine I changed the thermostat too, I wonder if there is a sensor/wire or similar been disturbed??

[maxamplitude10]

I've got the pressure switch coming any day now so will let you know if this solves it for me. If not gona buy the solenoid.

Did this solve your issue?

[Jons1001]

I've got the pressure switch coming any day now so will let you know if this solves it for me. If not gona buy the solenoid.

Did this solve your issue?

Hi, very sorry I never updated . Turned out in my case I was lucky as when I got under the car to fit an ac solenoid valve (pressure sensor didn't solve it and is fitted from above but reading on you'll see why it didnt solve it) I noticed the sensor for the solenoid had been left unplugged by the mechanic who fitted the thermostat a few weeks earlier! So this was why my ac wasn't working all along!

I have got a pressure sensor, the crows foot spanner needed to fit it and an ac solenoid valve you could have for a reasonable price though now if you're interested.

Edit: just noticed you had your thermostat changed too, get under and have a look. Mine was very obvious as the sensor was just hanging there disconnected.

[maxamplitude10]

Ah ok I'll have a poke around in that case and see what I can find?
Thanks