Member Since: 26 Aug 2021
Location: Highlands
Posts: 4
CODE B11FF-84
Yesterday I had a smell of what I thought was air con gas. It only lasted for a few seconds then all good again. This morning I thought I would check for any new codes and got this. Does this indicate a leek in the air con within the cab?
24th Dec 2021 9:38 am
popsdosh
Member Since: 09 Nov 2009
Location: cambs
Posts: 442
Almost certainly a leak but could be anywhere in the system !
24th Dec 2021 12:49 pm
Caleybo
Member Since: 26 Aug 2021
Location: Highlands
Posts: 4
Hi, thanks for the reply. I thought as much but the smell in the cab made me think it could be internal fittings. Not sure how/where the air con fitting/pipe are behind the dash. I hope it's not a dash out job.
24th Dec 2021 1:47 pm
grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6403
from workshop man
B11FF84
A/C Refrigerant
Pressure - Signal
below allowable range
Insufficient refrigerant insystem
Refrigerant pressure sensor failure
Automatic temperature control module internal failure
Using the manufacturer approved diagnostic system,
datalogger test and review Climate control system /
Air conditioning / External ambient temperature. If
the external ambient temperature is <5> 5°C, test the
refrigerant system using a suitable charging station
I
nstall a new refrigerant pressure sensor as necessary
Using the manufacturer approved diagnostic system,
clear the DTCs and retest. If the fault persists,
install a new automatic temperature control module
i do not think this is cabin side issue
i would check for leak at air con valves in engine bay
24th Dec 2021 2:25 pm
Caleybo
Member Since: 26 Aug 2021
Location: Highlands
Posts: 4
Thank you for the detailed reply. I will have a look into this and report back with my finding.
24th Dec 2021 2:37 pm
eightfoot
Member Since: 12 Apr 2015
Location: sunny essex
Posts: 806
just to let you know my d3 had this code and it was triggered by a really cold weather snap,i think it was on the edge of needing a service and the cold just took it to the threshold that pinged the code i had never had the a/c serviced so had it recharged and its been fine for about 3 yrs now
wouldn't think its a leak just needs a rechargeplease excuse any grammer/punctuation mistakes,i'm thick,thankyou
current vehicles 2005 d3 2013 d4
24th Dec 2021 2:53 pm
Caleybo
Member Since: 26 Aug 2021
Location: Highlands
Posts: 4
Thank you, On the day I got the code I was on a 500 mile journey that took me through, fog, freezing rain, snow and -8 C. So I might have it serviced first then, because it was working just fine in August.
24th Dec 2021 3:01 pm
popsdosh
Member Since: 09 Nov 2009
Location: cambs
Posts: 442
That would not account for the smell !! The engine and cabin side is a complete loop so no such things as cabin side from that point of view . Take it to somebody who knows what they are doing ,there are a lot of cowboys out there. Get it looked at very soon as moisture will contaminate the system if a large leak has developed.
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