Member Since: 15 Jan 2016
Location: GL
Posts: 10375
Suspension C112F-72 (2E) C1130-66 (2E) Valve Stuck Open
Yellow light came on twice today. I'm sure I felt the rear sinking.
Could someone tell me whether its the front or rear valve block I need to look at ?
Thank you
C112F-72 (2E) Air spring valve - Mechanical failure - actuator is stuck open
C1130-66 (2E) Air spring air supply - Algorithm based failure - signal has too many transitions/events
Oh and bonus Q - Which speaker ?
B1A01-13 (2C) Speaker 1 circuit - General electrical failure - circuit open
9th Jul 2016 1:23 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10375
I had a look at the compressor and rear valve block.
All looked very clean.
I put some soapy water over it and didn't see any air bubbles with eng running.
Compressor stopped
9th Jul 2016 9:04 pm
hgrimmett
Member Since: 11 Oct 2009
Location: Bledlow
Posts: 901
You won't see any, it's an internal leak. if it were me I'd dismount the rear air block, dismantle it, clean all the seals and refit. if that failed, i'd fit a new rear block. If you're sure it's a problem at the rear...-------------------------------------------------------------------
D4 '15 (64) Se Tech Indus Silver
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9th Jul 2016 11:24 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10375
Arh yes of course.
I did a search on here, which lead me to get the soapy water out.
It's on my job list to clear the internals of the front block.
However I would really like to know whether my code points to a front or rear problem.
Can't believe I can't find these codes. I download some stuff from topix a while ago. I have the 4x4 codes but not much else.
10th Jul 2016 10:04 am
Robbie
Member Since: 05 Feb 2006
Location: ¯\_(ツ)_/¯
Posts: 17932
Aside of electrical failure every failed valve block I have seen has been full of desiccant dust. With desiccant in the system a clean of all the valve blocks and the pump, plus new desiccant, is the ideal way forward.Land Rover - Turning Drivers into Mechanics Since 1948
Member Since: 11 Oct 2009
Location: Bledlow
Posts: 901
If you follow the instructions to diagnose a dropping air bag; remove fuse 26 and measure the heights, leave overnight and remeasure you might find that the affected end has dropped. Then you have confirmation as to whether it's front or back. If that fails then it might be an intermittent issue. You could clear the fault and wait for it to happen again...-------------------------------------------------------------------
D4 '15 (64) Se Tech Indus Silver
Tesla Model Y LR (22)
Audi TT Roadster 225 (52)
Tesla Model 3 LR (70) (gone)
Porsche Boxster '96 2.5 5spd project (P)
Mini R52 S (54)
BMW 330e eDrive MSport '16 (gone)
D3 '07 (56) XS TDV6 Buckingham Blue (gone)
Last edited by hgrimmett on 10th Jul 2016 11:17 pm. Edited 1 time in total
10th Jul 2016 4:35 pm
Pete K
Member Since: 15 Jan 2016
Location: GL
Posts: 10375
Thanks. Good idea about the fuse. I guess that prevents it self leveling.
EDIT: Appears to be the front passenger side which has dropped. Not as much as expected though over 1 night.
Last edited by Pete K on 16th Jul 2016 5:36 pm. Edited 1 time in total
10th Jul 2016 8:19 pm
hgrimmett
Member Since: 11 Oct 2009
Location: Bledlow
Posts: 901
Exactly so. -------------------------------------------------------------------
D4 '15 (64) Se Tech Indus Silver
Tesla Model Y LR (22)
Audi TT Roadster 225 (52)
Tesla Model 3 LR (70) (gone)
Porsche Boxster '96 2.5 5spd project (P)
Mini R52 S (54)
BMW 330e eDrive MSport '16 (gone)
D3 '07 (56) XS TDV6 Buckingham Blue (gone)
10th Jul 2016 11:18 pm
z4cAtS
Member Since: 05 May 2011
Location: M4 J13
Posts: 137
I have been chasing down the cause of these codes on my 06.
In the end, replacing the rear valve block has (so far) fixed the problem. Typically, I started at the front...
However, a possible help with diagnosis if you have and IID or similar is to log these on a run:-
Gallery Pressure
Reservoir Valve
Exhaust Valve
All four corner valves
Ride height
I had the gallery pressure sawtoothing, it would go from 200Kpa up to 500Kpa over the course of a few minutes. Then the exhaust valve would do a quick fart and the cycle would begin again.
After a couple of these cycles the one of the rear valves would open for a few seconds.
I guess this was the result of the leaking air back feeding into the system. It would pump itself back up when next stationary.
Since replacing the block, the gallery pressure sits at a stable 333Kpa and the saggy rear has gone away.(Remap, EGRs Blanked,Silicon I/C hose) from BAS, (Torque Convertor, Compressor, FL Wishbones, Alternator) by WD, Belts by Newbury4x4, Megaflush+extra cooler by GRGB, Diff+Transfer oils, ARB Bushes, Fuel filter, Fixed Towbar, Remote FBH.
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