I2C Pressure Sensor

Using Arduino Sensors
7

what you made of it

while (Wire.available() <2 )
   {
    firstbyte = Wire.read();       // Read press high byte
    secbyte = Wire.read();      // Read press low byte
   }

is not what MarkT porposed

 while (Wire.available() < 2)
  {}
  firstbyte = Wire.read();       // Read press high byte
  secbyte = Wire.read();      // Read press low byte

read carefully!