My problem is when I try to read the same data from the Pins 0,1,14 of the Arduino board in another port of my laptop.
The Arduino outputs TTL level signals. Your PC is expecting RS232 levels. You haven't said whether you are using a RS232 to TTL converter, so, you may be getting garbage input.
What is pin 14 doing? It has nothing to do with communication? Is there a ground connection that you failed to mention?