As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SEA TO MSO FLIGHT 2340: POWER PLANT MESSAGE CAME ON AND REMAINED ILLUMINATED FOR REMAINDER OF FLIGHT. FLIGHT WAS DIVERTED TO GEG. MAINTENANCE FOUND FAULT CODE 158B IN CDS. CLEARED FAULT IAW FIM TASK 61-20-04-810-812. FAULT DID NOT REOCCUR. NO PARTS REPLACED. AIRCRAFT RETURNED TO SERVICE.