My 98 V70 GLT is blowing fuse #5 (climate control/diagnostics). I first noticed a problem when my "park brake" light was on when my car was off. Then I noticed my a/c was blowing hot air, not just outside air but "hot". That's when I discovered the blown fuse and replaced. A/C worked for half hour with 1 OBD code P0108 (Manifold Absolute Pressure/BARO Sensor High Input) then blew again. I disconnected battery over night, replaced fuse again. A/C worked for a while then blew fuse again. No OBD codes or "park brake" light for the past few days. Checked a/c wires-good.

Thanks in advance for your suggestions
Aaron