As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX- ON CLIMB THRU 7000', NR 1 PROP SUDDENLY INCREASED TO 1020 RPM. AFTER RESETTING TO 850 RPM IT WAS NOTICED A 4 PERCENT TRQ SPLIT AND INCREASING WITH ALT APPEARED NR 1 BLEED MAY NOT BE WORKING. NO CAUTION LIGHTS OR MESSAGES NOTICED. RETURNED TO FIELD AND ACCOMPLISHED A UNEVENTFUL LANDING. REMOVED AND REPLACED P 2.2 BLEED VALVE POWER ASSURANCE RUNS CHECK GOOD. RETURNED TO SERVICE.