Destroy objects when key is pressed

Hi, I'm trying to grab/destroy an object when I pressed the "P" key for 1.5 seconds I have this code, it would work if I don't ask for "P", just collide, but the game I'm working on ask for user interactions, any idea of what is wrong?

 bool haveAPart = false;
 string partName;
 int curParts = 0;
 float holdCounter = 1.5f;
 
 void OnTriggerEnter(Collider co) {
         if ((co.tag == "CarPart") && (haveAPart == false)) { // User can only grab one part at a time
             partName = "Hold 'P' to grab " + co.name; // show label with instructions to get the part
             if (Input.GetKeyDown (KeyCode.P)) {
                 holdCounter -= Time.deltaTime; 
                 if (holdCounter <= 0) { // user pressed the "p" key for 1.5 seconds
                     haveAPart = true;
                     Destroy (co.gameObject);
                     partName = "You got: " + co.name;
                     curParts++;
                     holdCounter = 1.05f; // restart timer
                 }
             }
         }
     }

Thanks! :)