Does the van lock with the remote? If it does, it probably is the drivers side door lock actuator. If it doesn't lock, it might still be the drivers side door lock actuator. The power locks are basically controlled by that lock actuator and where it detects the switch's location. I had a similar concern with my 2004 Accord. I replaced the drivers side actuator, everything worked properly from that time on from the remote.I have a 2004 Odyssey that won't unlock with either remotes I have. Was working two days ago when last used. I don't want to unlock it manually and have the alarm go off. What do I do?