As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER TAKEOFF FROM CMH AT ABOUT 26000 FT, LT ENG OIL PRESS WARNING MESSAGE ILUMINATED. OIL PRESS WAS FLUCTUATING BETWEEN 23 - 32 PSI, APPROXIMATELY 4 - 5 MIN LATER PRESS FELL BELOW 25 & STAYED IN THE RED. COMPLETED QRH & SHUT DOWN LT ENG. DIVERTING TO DTW DUE TO LT ENG OIL TEMP LOW & FLUCTUATING. EMERGENCY HAS BEEN DECLARED, ENG WAS SHUT DOWN. PERFORMED LT ENG RUN CHECK & OIL CONSUMPTION CHECK IAW AMM 71-00-00. OPERATION & LEAK CHECKED GOOD, NO OIL ADDED.