Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Suspension fault codes - advice on where to start
Evening all,
I have a LR3 V8 in the US. It's had the odd suspension fault code, but when cleared they tended not to come back. However, I'm getting some pretty persistent 'Suspension Fault' dash messages. On reading the codes I'm getting the faults listed below pretty consistently. For what it's worth, I didn't get these faults until I updated the compressor firmware on the car using the IID tool. Maybe coincidence. The compressor is only about a year old and was fitted by a main dealer with a good rep.
Given these codes, where do I start my investigations? Any pointers most welcome.
Thanks.
C1A13-64 (2E) Pressure does not decrease when venting gallery - Algorithm based failure - signal plausibility failure
( on 31-12-2016 02:46:07 at 108888 km )
C1A36-01 (68 ) Exhaust valve - General failure information - general electrical failure
( on 31-12-2016 15:34:08 at 108920 km )
C1A27-14 (68 ) Compressor circuit - General electrical failure - circuit short to ground or open
( on 31-12-2016 15:31:02 at 108918 km )PAGODA
16th Jan 2017 4:05 am
pagoda
Member Since: 13 Aug 2009
Location: Not London Anymore (or the US for that matter)
Posts: 1923
Bump! Anyone? So many links on the site it's unclear to me where I should begin faultfinding.PAGODA
21st Jan 2017 5:39 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13613
to me it seems to be a wiring issue
might be worth removing the wiring plugs on the compressor and giving them a clean with some contact cleaner
maybe someone with more knowledge than myself will be along
sorry i can't be more help to u
would it be worth taking to the gap team ref the iid , as u mention it was ok before , might have just been a coincidence
21st Jan 2017 5:59 pm
tayaste
Member Since: 15 May 2013
Location: Chester
Posts: 7633
Do you know what compressor was fitted? And has it got the correct firmware in relation to the compressor?
21st Jan 2017 6:15 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
I have this same problem . Had brake pads changed then bodsy updated compressor and pressure was good now this fault comes up.
C1A13-64 (68)
Got my iidtool so now I'm on to here to finding a soloution . Where is the compressor located and West do the exhausts look like.
12th Jan 2018 9:34 pm
Allan_T
Member Since: 10 Sep 2012
Location: Northampton
Posts: 1034
Start with the fuses/relay and wiring harness checks.
Click image to enlarge
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GAP IID Pro Multi Vehicle Defender L316 2007-2015 - Discovery 3 - Discovery 4 - Discovery Sport L550 - Freelander 2 - Range Rover Evoque L538 - Range Rover L322 - Range Rover L405 - Range Rover Sport L320 - Range Rover Sport L494 Electrical Fault Diagnostics
12th Jan 2018 10:44 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
Yep that's mine in the middle will hopefully get a look tomorrow at the compressor and the fuses
12th Jan 2018 11:24 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
I think this is what I need to do . As the wiring looks ok. Will try and report back
14th Jan 2018 11:47 am
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
Ordered the master compressor repair kit new brick bulbs and brake sensor so hopefully this weekend I will be able to do it all
15th Jan 2018 6:10 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
Repair kit arrived today roll on Saturday. If this doesn't fix it am sure the cross valve at the front will . Left stuck on 4x4 super extended mode overnight and front dropped on it's own so am thinking there's a leak at front to find aswell
18th Jan 2018 4:34 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
Removed compressor and repaired dissident and exhurst valve just need 3 bolts and 2 air line attachments then I'll refit tomorrow and check her over .
21st Jan 2018 8:32 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
Yay . All back on and working his up and down alot faster ow and no errors . But can someone help explain these
Instrument Pack
U0102-87 (2E) Lost communication with transfer case control module - Bus signal/message failure - missing a message
U0132-87 (2E) Lost communication with ride level control module - Bus signal/message failure - missing a message
U0159-87 (2F) Lost communication with parking assist control module - Bus signal/message failure - missing a message
Ventilation
B1B78-84 (2F) System pressure - Bus signal/message failure - signal is below allowable range
( on 15-08-2015 10:07:44 at 129913 mi )
22nd Jan 2018 8:49 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13613
hi
good to see it’s all up and running again
from what i’ve previously read the U codes can be ignored and cleared
last one is ur AC is low and needs regassing, but may have a leak to which an AC garage will do a vacuum test on it first , to ensure there’s no leaks before refilling it
22nd Jan 2018 10:24 pm
Damomerlin
Member Since: 17 Dec 2017
Location: York
Posts: 106
Great.Well chuffed . Landrover around here charges 135 an hour took me 2 hrs maybe 3 because the bolts were stuck but yep fingers x
22nd Jan 2018 10:26 pm
gstuart
Member Since: 21 Oct 2016
Location: kent
Posts: 13613
indeed can be great fun trying to get the old bolts out and new ones back in
ur not wrong there with the amount of money that some dealers charge
ours charges £120 per hour plus vat
also done nearly all of the repairs myself and is very satisfying along with saving a lot of money
did get Flack and Geoff. to do my belts though , i wasn’t going to even attempt it , over the moon with the work that they did
know though, this forum has been invaluable and would have been a massive struggle without the great help from members on here
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