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Suspension Fault - C1131-92
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Brucey
 


Member Since: 24 Oct 2015
Location: Bedfordshire
Posts: 137

2012 Discovery 4 3.0 SDV6 XS Auto Indus SilverDiscovery 4
Suspension Fault - C1131-92

After some help with a suspension fault that occurs every so often. C1131-92 Air supply component failure.

A few months before this has started to appear I fully refurbished the Hitachi compressor including the exhaust valve due other error codes. That all got cleared up but now this has started. I'm confident the compressor is healthy, the improvement after the service was huge.

I've done what diagnostics I can and think that maybe the reservoir value block might have an internal leak from the reservoir valve. If I monitor the gallery pressure it slowly climbs until the exhaust valve opens and dumps the pressure. At this point the error code appears. (See the red line on the screenshot)

Click image to enlarge


Is my theory even possible? I'm assuming that the gallery pressure should stay pretty static once the compressor has finished pumping?

Thanks for any help/opinions

Bruno
  
Post #205663828th May 2019 1:26 pm
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Admirable
 


Member Since: 19 Jul 2015
Location: Fife
Posts: 1039

Ukraine 2007 Discovery 3 TDV6 XS Auto Zermatt SilverDiscovery 3

https://www.disco3.co.uk/forum/suspension-...58164.html

Delivery valve?
  
Post #205664928th May 2019 2:11 pm
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Brucey
 


Member Since: 24 Oct 2015
Location: Bedfordshire
Posts: 137

2012 Discovery 4 3.0 SDV6 XS Auto Indus SilverDiscovery 4

Hi, yes I've seen that thread. I did that valve and a few other bits in this kit https://www.advancedfactors.co.uk/jpo50001...5193-p.asp
  
Post #205667628th May 2019 3:53 pm
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