2005 xc70 dtc 280b, fuel pressure sensor

[mrscullini]

monitored the fuel pressure with my scanner this morning. pressure seems to bounce between about 312-324 kPa. even under acceleration as getting on the freeway. this was interesting, as i let off the throttle getting of the freeway, the pressure spiked to about 550 kPa, this was with no throttle. did not feel anything different with engine speed, etc.

does this seem correct? can the fuel pump put out that much pressure? i assume the pressure signal is coming from the pressure sensor.