Continuing on from my earlier post...
The trigger bar could also be checked by removing the side plate and this will probably be necessary anyway.
In theory, this can be done without removing the slide, but I've not tried that myself.
The reason I haven't tried it that way is I fear damaging the side plate. The side plate is held in place by a screw (or pin) in it's upper left corner.
Opposite this pin/screw, the side plate has a tab that slides under the frame:
Please note, the above photo is of a P380, their side plates do not have the next feature I'm about to discuss.
In the lower left portion of the side plate, there is also a ball/stud and socket connection that holds the plate on the frame.
This connection is why I haven't tried to remove the plate with the slide on the gun. I prefer to slide a tool in from the the top of the plate to pop the ball/stud from it's socket and find this best done with the slide removed.
So to summarize:
Pull the pin/screw
Pop the ball/stud from it's socket.
Slightly lift the left side of the plate and slide the plate off to the left.
With the plate removed, check that the trigger bar will move upward under force from the trigger bar spring until it engages the cocking cam as shown:
Note that the photo also shows a correctly positioned trigger bar spring.
If all looks good to this point, check if the slide or side plate might be preventing the trigger bar from resetting.
Regards,
Greg