As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT "RAM DOOR FULL OPEN" LIGHT WAS ILLUMINATED THE ENTIRE FLIGHT. PACKS, A/C, PRESSURIZATION ALL NORMAL. GROUNDED - YES. PERFORMED B737-900 FIM 21-51 TASK 803. NO FAULTS FOUND, OPS CHECK NORMAL. DETERMINED TO BE INTERMITTENT FAULT. AIRPLANE RETURNED TO NORMAL CONFIGURATION.