Member Since: 24 Oct 2015
Location: Bedfordshire
Posts: 137
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
28th May 2019 1:26 pm
Admirable
Member Since: 19 Jul 2015
Location: Fife
Posts: 1039
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