As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CREW REPORTED DURING CLIMBOUT, GOT AMBER LOW OIL PRESSURE WARNING, FOLLOWED BY RED LOW OIL PRESSURE WARNING ON LEFT ENGINE. PULLED THROTTLE BACK TO IDLE AND LEFT ENGINE AUTO SHUTDOWN. EMERGENCY DECLARED FLIGHT RETURNED DFW LANDED WITHOUT INCIDENT. AIRCRAFT REMOVED FROM SERVICE. REPLACED LEFT ENGINE ON 12/26/2011. SYSTEM GROUND CHECK NORMAL OPERATION.