As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PDX FLIGHT 2308 - AFTER START, THE PITCH TRIM CAUTION REMAINED ILLUMINATED. AFTER ENGINE SHUTDOWN, CAUTION LIGHT WENT OUT. MAINTENANCE REINITIALIZED POWER TO FCS ECU NR 1 AND 2. FAULT LIGHT DID NOT RE-ILLUMINATED. CYCLED TRIM-ELEVATOR NOSE UP AND NOSE DOWN, CHECKS OK. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.