L322 air reservoir pressure static when filling

2003 td6 l 322 .
I'm getting
air reservoit tank static when filling o my rs soloutions software . I clear and it comes back. it is however lifting on all four corners . it wouldnt lift properly and would lift two maybe 3 corners before compressor overheat used to come on so i replaced the seal on the compressor . Now it lifts but im getting the resevoir pressure static when filling
thanks for any help ,insight that may be offered

Unless the pressure sensor is blocked with debris from the seal dust?