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Tattiepicker



Member Since: 01 Apr 2021
Location: Aberdeen
Posts: 51

United Kingdom 2011 Range Rover Vogue TDV8 Mariana Black

B1087-54 (2F) LIN bus A - System programming failure - missing calibration

Did you manage to fix this code? I just had my air con serviced and this close is apparently holding out the A/C system from working. Going by the manual 5 motors are the Lin bus input to the ATC module.

Post #602345 30th Jul 2021 11:01pm
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ffrr14



Member Since: 21 Apr 2021
Location: Sydney
Posts: 187

Australia 2011 Range Rover Autobiography TDV8 Orkney Grey

Means one or more stepper motor's gone.

Can you post the complete output? SOLD | Tuned MY 2011.5 Range Rover Autobiography 4.4 TDV8 Orkney Grey | e-diff | ACC

New Toy: Unimog U1550L/37
New : G350D

Post #602355 31st Jul 2021 7:59am
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Tattiepicker



Member Since: 01 Apr 2021
Location: Aberdeen
Posts: 51

United Kingdom 2011 Range Rover Vogue TDV8 Mariana Black

Not sure what you mean by the complete output? I have the gap iid tool if that can be used to diagnose which ones are faulty.

Post #602358 31st Jul 2021 9:10am
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ffrr14



Member Since: 21 Apr 2021
Location: Sydney
Posts: 187

Australia 2011 Range Rover Autobiography TDV8 Orkney Grey

yes you will need an output from the IID tool. SOLD | Tuned MY 2011.5 Range Rover Autobiography 4.4 TDV8 Orkney Grey | e-diff | ACC

New Toy: Unimog U1550L/37
New : G350D

Post #602448 31st Jul 2021 10:55pm
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ffrr14



Member Since: 21 Apr 2021
Location: Sydney
Posts: 187

Australia 2011 Range Rover Autobiography TDV8 Orkney Grey

ffrr14 wrote:
It is dropping right







The second battery is recent, but the noise pre dates it.

I will have to do some old fashioned probing the long weekend.

R1 is glove compartment and corresponding in the rear is during sleep, any ideas?


Thank you



Is it possible for R1 to get stuck?? SOLD | Tuned MY 2011.5 Range Rover Autobiography 4.4 TDV8 Orkney Grey | e-diff | ACC

New Toy: Unimog U1550L/37
New : G350D

Post #603961 16th Aug 2021 9:32pm
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GraemeS



Member Since: 06 Mar 2015
Location: Wagga area
Posts: 2458

Australia 2012 Range Rover Autobiography TDV8 Bournville

Are you thinking that the heat would be from the contacts or from the coil if the contacts are stuck closed? There's no feed-back from the contacts to the coil otherwise the coil would always be energised without any way to release the contacts.

Post #603970 17th Aug 2021 1:27am
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jagracer



Member Since: 14 Aug 2021
Location: Norfolk
Posts: 113

United Kingdom 2011 Range Rover Vogue 4.4 V8 Zermatt Silver

Have you got an interior light coming on due to badly a adjusted micro switch? Had that one, took me ages to realise the system did not shut down, kept cycling. It was in the glovebox which had dropped out of the track one side.

Post #604026 17th Aug 2021 6:18pm
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s.ozer1991



Member Since: 28 Jan 2023
Location: Antalya
Posts: 7

Turkey 2010 Range Rover Vogue TDV8 Nara Bronze

Dear friens,

I have same problem with hvac like as below. Does this mean that i have to change all damper motors which shown on error list?



Post #654994 28th Jan 2023 6:54pm
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s.ozer1991



Member Since: 28 Jan 2023
Location: Antalya
Posts: 7

Turkey 2010 Range Rover Vogue TDV8 Nara Bronze

I solved some of problems with removing HVAC. plug off all sockets and then plug in. There was probably loose contact. And after this process, problems has been solved.

If somebody encounters that kind of wide problem, they can focus on HVAC and it’s sockets first.

Post #658984 9th Mar 2023 7:08pm
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Haylands



Member Since: 04 Mar 2014
Location: East Yorkshire
Posts: 8160

England 2014 Range Rover Autobiography SDV8 Loire Blue

Well done on the fix... Thumbs Up Pete

__________________________________________________
2014 L405 Autobiography SDV8 4.4 Loire Blue Ebony interior
2011 L322 Vogue SE 4.4 TDV8 Baltic Blue. Parchment over Navy Interior. Sold
2012 L322 Autobiography 5.0 Supercharged Ipanema Sand, Jet Interior. Sold
2002 L322 Vogue 4.4 V8 Epson Green, Ivory over Aspen Interior (Fatty Offroader) Sold
-Click for Project Fatty off roader-

Post #659003 9th Mar 2023 9:59pm
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TomC-RRV8



Member Since: 18 Sep 2022
Location: Pangbourne
Posts: 74

United Kingdom 

I have AC that is very inconsistent in its delivery and have the below fault code:

B1087-54 (2F) LIN bus A - System programming failure - missing calibration.

I have this issue, is it a case of something needing to be recalibrate or replaced. My thinking is the interior ambient temperature sensor. Or as suggested above is it a case of me just needing to unplug the HVAC connectors and check their connections?

Many thanks for any advice. Current
2011 4.4TDV8 VSE
1972 MGBGT
Gone
2004 Discovery Landmark 2.5D
2003 Freelander TD4 SE

Post #697502 6th Aug 2024 5:19pm
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