B6 Heater Problem

[bossntom]

Can anyone help with this problem?

I have a 2006 B6 Passat 2.0 ltr td 140bhp

The heater works perfectly on the drivers side, but the further over you go to the passenger side the colder it gets,
All the blowers work fine when you adjust the positioning of them
The air con seems to be working fine,
The Cabin filter is dirty
I have took the sterio out and looked behind but I can't see any cables that other people have been on about
Can you help me by advising what it could be and how I go about fixing it
Kind regards
Tom

[RichardSEL]

2006 B6 Passat 2.0 ltr td 140bhp The heater works perfectly on the drivers side, but the further over you go to the passenger side the colder it gets,
All the blowers work fine when you adjust the positioning of them
The air con seems to be working fine,
The Cabin filter is dirty
I have took the sterio out and looked behind but I can't see any cables that other people have been on about
Can you help me by advising what it could be and how I go about fixing it

Haved you changed the cabin filter now?
What system: Climatic or Climatronic?
By any chance, if Climatronic do you have Dual Zone on?
The Climatic has a Bowden Cable that connects the step control to its knob. Does the temperature adjust alright on drivers' side?

[bossntom]

Hi there
I changed the Cbin filter, still have the problem, not sure if its Climatic or Climatronic, it has dual controls, the passenger side figures go up when the dial is turned up, however the temperature doesnt change at all, I am wondering if it is the control itself,
The driver side still works fine and when you adjust the blower to go to the feet, windscreen, face, etc it all moves
Thanks for your reply
Kind regards
Tom

[RichardSEL]

That'd be Climatronic then. The Dual Zone light comes on when that button's pressed
The flaps are known to have some problems, my foots' heat flow is very weak on both sides
There are some diagnostic codes in the attached but dunno whether they'd help?
Climatronic codes.txt