Electronic – arduino – Using multiple TCA9548A multiplexers

The case is that I have 5 temperature sensors.

I want to connect 4 of them to the first TCA9548A (TCAADDR0), the SDA and SCL busses (from the ports 0 to 3) and connect the fifth one to the second TCA9548A (TCAADDR1).

If the fifth sensor connect is connected to the busses 0 to 3 of TCAADDR1, I receive an incorrect temperature. However, if I connect it the busses No.4 of the TCAADDR1, I receive the correct temperature.

I think the problem is that I can not switch off the TCAADDR0 and only talk to the TCAADDR1.
On the other hand, if I connect A0 of the TCAADDR1 to the 5V, I have 3 addresses 0x70 0x71 and 0x77. If I don't connect it, I have 0x70 and 0x77. So I decided not to connect A0 to 5V.

This is my program code:

#include <Wire.h>
#include <Adafruit_BMP085.h>
Adafruit_BMP085 bmp;

Adafruit_BMP085 bmp180_0;
Adafruit_BMP085 bmp180_1;
Adafruit_BMP085 bmp180_2;
Adafruit_BMP085 bmp180_3;
Adafruit_BMP085 bmp180_4;

#define TCAADDR0 0x70
#define TCAADDR1 0x77


void tcaselect0(uint8_t sensor) { 
  unsigned int mask = 1 << sensor;
  Wire.beginTransmission(TCAADDR0);
  Wire.write(lowByte(mask));
  Wire.endTransmission();
  Wire.beginTransmission(TCAADDR1);
  Wire.write(highByte(mask));
  Wire.endTransmission();
  delay(1);
}

void tcaselect1(uint8_t sensor) { 
  unsigned int mask = 1 << sensor;
  Wire.beginTransmission(TCAADDR0);
  Wire.write(lowByte(mask));
  Wire.endTransmission();
  Wire.beginTransmission(TCAADDR1);
  Wire.write(highByte(mask));
  Wire.endTransmission();
  delay(1);
}

void setup() {
  Serial.begin(9600);
  Wire.begin();  //enabling the I2C protocol through the Wire.begin()

  //FIRST SENSOR**                
  tcaselect0(0); 
  if (bmp180_0.begin() != 0x60)
  { Serial.print(F("BMP180 Nr.1 detected?\t")); Serial.println(F("No"));}
  else
  { Serial.print(F("BMP180 Nr.1 detected?\t")); Serial.println(F("Yes"));}


  //SECOND SENSOR
  tcaselect0(1); 
  if (bmp180_1.begin() != 0x60)
  { Serial.print(F("BMP180 Nr.2 detected?\t")); Serial.println(F("No"));}
  else
  { Serial.print(F("BMP180 Nr.2 detected?\t")); Serial.println(F("Yes"));}


  //THIRD SENSOR
  tcaselect0(2);  
  if (bmp180_2.begin() != 0x60)
  { Serial.print(F("BMP180 Nr.3 detected?\t")); Serial.println(F("No"));}
  else
  { Serial.print(F("BMP180 Nr.3 detected?\t")); Serial.println(F("Yes"));}


  //FOURTH SENSOR
  tcaselect0(3);  
  if (bmp180_3.begin() != 0x60)
  { Serial.print(F("BMP180 Nr.4 detected?\t")); Serial.println(F("No"));}
  else
  { Serial.print(F("BMP180 Nr.4 detected?\t")); Serial.println(F("Yes"));}



Wire.beginTransmission(TCAADDR0);
Wire.write(0);
Wire.endTransmission();

  //*FIFTH SENSOR
  tcaselect1(4);  
  if (bmp180_4.begin() != 0x60)
  { Serial.print(F("BMP180 Nr.5 detected?\t")); Serial.println(F("No"));}
  else
  { Serial.print(F("BMP180 Nr.5 detected?\t")); Serial.println(F("Yes"));}

  Serial.println();
  Serial.println(F("##############################"));            //30-times #
  Serial.println(F("Initialization Finished"));
  Serial.println(F("##############################"));            //30-times # 
  Serial.println();
  Serial.println();

}

void loop() 
{

  //SENSOR-FIRST
    tcaselect0(0);
    Serial.println("*****SENSOR NO.1***** ");
    Serial.print("Temperature = ");
    Serial.print(bmp180_0.readTemperature());
    Serial.println(" *C");

//*SENSOR-SECOND
    tcaselect0(1);
    Serial.println("*****SENSOR NO.2***** ");
    Serial.print("Temperature = ");
    Serial.print(bmp180_1.readTemperature());
    Serial.println(" *C");

//**SENSOR-THIRD
    tcaselect0(2);
     Serial.println("*****SENSOR NO.3***** ");
    Serial.print("Temperature = ");
    Serial.print(bmp180_2.readTemperature());
    Serial.println(" *C");

//*SENSOR-FOURTH
    tcaselect0(3);
     Serial.println("*****SENSOR NO.4***** ");
    Serial.print("Temperature = ");
    Serial.print(bmp180_3.readTemperature());
    Serial.println(" *C");


Wire.beginTransmission(TCAADDR0);
Wire.write(0);
Wire.endTransmission();


//*SENSOR-FIFTH
    tcaselect1(4);
     Serial.println("*****SENSOR NO.5***** ");
    Serial.print("Temperature = ");
    Serial.print(bmp180_4.readTemperature());
    Serial.println(" *C");


    Serial.println();
    delay(2000);

}