Hello Sirs

Please I need your help concerning my Honda civic 2002 (Auto).
Whenever I start the car, it jerks and then stalled, I will have to press the pedal immediately I start it before it becomes normal, same thing occur when I apply the brakes while in traffic.
Recently a friend assisted in scanning the car and it gave us the (P1505) code. Please, what does this code mean and how do I go about fixing the problem.

CC:
Gazzuzz
Kingreign
Egunmogaji
Luvinhubby
Mayor2013