As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE FLIGHT CREW REPORTED AN INTERMITTENT FAULT WITH THE MAIN CABIN DOOR VENT SOLENOID AND THE MAINTENANCE CREW TROUBLESHOT THE SYSTEM BUT WAS UNABLE TO VERIFY THE FAULT. KNOWING THAT THE DOOR VENT SOLENOIDS HAVE A VERY HIGH FAILURE RATE, THE MAINTENANCE CREW ELECTED TO REPLACE THE SOLENOID WITH A NEW UNIT. OPS CHECKS WERE SATISFACTORY, AND THE AIRCRAFT WAS RETURNED TO SERVICE.