diff --git a/esphome/components/tca9548a/tca9548a.cpp b/esphome/components/tca9548a/tca9548a.cpp
index e902eb5ed4..f3f8685287 100644
--- a/esphome/components/tca9548a/tca9548a.cpp
+++ b/esphome/components/tca9548a/tca9548a.cpp
@@ -22,7 +22,7 @@ i2c::ErrorCode TCA9548AChannel::writev(uint8_t address, i2c::WriteBuffer *buffer
 void TCA9548AComponent::setup() {
   ESP_LOGCONFIG(TAG, "Setting up TCA9548A...");
   uint8_t status = 0;
-  if (this->read_register(0x00, &status, 1) != i2c::ERROR_OK) {
+  if (this->read(&status, 1) != i2c::ERROR_OK) {
     ESP_LOGI(TAG, "TCA9548A failed");
     this->mark_failed();
     return;
diff --git a/esphome/components/tca9548a/tca9548a.h b/esphome/components/tca9548a/tca9548a.h
index 314346d317..39d07c2eb4 100644
--- a/esphome/components/tca9548a/tca9548a.h
+++ b/esphome/components/tca9548a/tca9548a.h
@@ -24,6 +24,7 @@ class TCA9548AComponent : public Component, public i2c::I2CDevice {
  public:
   void setup() override;
   void dump_config() override;
+  float get_setup_priority() const override { return setup_priority::IO; }
   void update();
 
   i2c::ErrorCode switch_to_channel(uint8_t channel);