As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ON T/O ROLL EICAS CAUTION MESSAGE FOR HIGH STAGE VALVE 1 0R 2 FAILED. CAPTAIN SAID HE DID NOT KNOW FOR SURE WHICH IT WAS. AND MESSAGE WENT AWAY, WITH NO CMC MESSAGE.NO EICAS MESSAGE TO CONFIRM....FIX: CREW GROUND RAN A/C.C/W AMM 36-11-02-700-801-A.OPS CHECK GOOD.ADVANCE TO T/O PWR.NO MESSAGES PRESENT.A/C OK FOR SERVICE.