Aporte original por: David Spalding ,
If all but one door locks and unlocks then it is likely the Power Door Lock Actuator Assy for that faulty door. On my Honda CL9 (Euro and JDM Accord) the actuator was weak, intermittent, before going completely inoperative. It is not an expensive part (less than $30 as of today, depending upon the source for the part), and it shouldn't take a dealer technician more than an hour of work to remove the door panel and change the actuator. Check with your dealer, and your preferred shop. You can buy the actuator online, but if that's not actually the problem, you've bought an unneeded part.