I have a 2002 Civic Si. And the Remote only works for truck and alarm both driver and passenger side door cannot be locked by remote. I did some research thought this is the actuator broken. but the difference is i cannot lock the door on the driver side even using the key, it works fine with the key on passenger side. the oddest thing is i can lock the driver door with a back up key(not OEM can only open door cannot start the car) So is it only the actuator not working or something else might be not working as well?? Can anyone answer me please!!!!Really need your help thanks

 

that is crazy a vallet key will turn and lock the door but your OEM key will not?!

 

It sound doesn't make sense right? But it is what happen on my car and that's why I got so confused

 

the actuator common problem