T190 charge pressure question

Newb here with a few ?s. Recently purchased a 2011 t190. Put about 60 hours on it and a hydrostatic filter blocked showed up on the active warning. Fired it up a week later and it was gone. The charge pressure was 280ish at idle and 380ish fui throttle. Is that high? Will a dirty filter cause this? Which filter do I change? Seems there is the 1 large at the back and 1 under the cab. The one in the back has maybe 40 hours on it. Or are these normal pressures and possibly a bad sensor? This...

T190 charge pressure question

T190 charge pressure question