As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED BACK TO DEPARTURE, DUAL ENGINE COMPUTER LIGHT IN FLIGHT. CAUSED LOSS OF POWER AND FUEL FLOW ON LT ENGINE. ALSO WHEN DECREASING THROTTLE N1 WOULD INCREASE RED N1 POINTER FELL TO ZERO. BIG SPLIT IN N1 WHILE TAXIING IN AFTER LANDING.