diff --git a/esphome/components/grove_tb6612fng/grove_tb6612fng.cpp b/esphome/components/grove_tb6612fng/grove_tb6612fng.cpp
index a24998464..428c8ec4a 100644
--- a/esphome/components/grove_tb6612fng/grove_tb6612fng.cpp
+++ b/esphome/components/grove_tb6612fng/grove_tb6612fng.cpp
@@ -131,7 +131,7 @@ void GroveMotorDriveTB6612FNG::stepper_run(StepperModeTypeT mode, int16_t steps,
   buffer_[4] = ms_per_step;
   buffer_[5] = (ms_per_step >> 8);
 
-  if (this->write_register(GROVE_MOTOR_DRIVER_I2C_CMD_STEPPER_RUN, buffer_, 1) != i2c::ERROR_OK) {
+  if (this->write_register(GROVE_MOTOR_DRIVER_I2C_CMD_STEPPER_RUN, buffer_, 6) != i2c::ERROR_OK) {
     ESP_LOGW(TAG, "Run stepper failed!");
     this->status_set_warning();
     return;
diff --git a/esphome/components/sht4x/sht4x.cpp b/esphome/components/sht4x/sht4x.cpp
index 9d29746f0..42be32620 100644
--- a/esphome/components/sht4x/sht4x.cpp
+++ b/esphome/components/sht4x/sht4x.cpp
@@ -10,7 +10,7 @@ static const uint8_t MEASURECOMMANDS[] = {0xFD, 0xF6, 0xE0};
 static const uint8_t SERIAL_NUMBER_COMMAND = 0x89;
 
 void SHT4XComponent::start_heater_() {
-  uint8_t cmd[] = {MEASURECOMMANDS[this->heater_command_]};
+  uint8_t cmd[] = {this->heater_command_};
 
   ESP_LOGD(TAG, "Heater turning on");
   if (this->write(cmd, 1) != i2c::ERROR_OK) {