Sorry to resurrect this old thread but my 2013 SDV RR Sport has been having this error for sometime, Only 40k miles on the clock. So, I have been doing tons of research to fugure out what actually produces this fault, "Pressure increases too rapid when filling reservoir - Algorithm based failure - signal plausibility failure." And I have found some new information that may help others on the site. My cars suspension operates normally, doesnt lose air etc. My gap tool indicates around 188 PSI when it kicks off with fault, so not sure as yet if it will produce above 200 psi. Anyway, I came across a fairly recent video by DiagnosticsDan who explains very well how to troubleshoot this issue. I will be following his guide and will report back, in any case, here is the link to the video. Hope it helps someone out.
