diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3d13839..082ad47 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -3,7 +3,11 @@
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
-## [Unreleased] 
+## [Unreleased]
+
+### Fixed
+
+- Wrong computation of sensor variant in method getSensorVariant
 
 ## [1.0.0] - 2025-1-30
 
diff --git a/README.md b/README.md
index b6f600a..7fcb8a7 100644
--- a/README.md
+++ b/README.md
@@ -19,6 +19,7 @@ support it are listed in the API description.
 | ------------- | -------------- |
 |[SCD40](https://sensirion.com/products/catalog/SCD40)| **0x62**|
 |[SCD41](https://sensirion.com/products/catalog/SCD41)| **0x62**|
+|[SCD43](https://sensirion.com/products/catalog/SCD43)| **0x62**|
 
 The following instructions and examples use a *SCD41*.
 
diff --git a/scd4x_i2c.c b/scd4x_i2c.c
index 0602866..581559e 100644
--- a/scd4x_i2c.c
+++ b/scd4x_i2c.c
@@ -162,24 +162,27 @@ int16_t scd4x_get_data_ready_status(bool* arg_0) {
 }
 
 int16_t scd4x_get_sensor_variant(scd4x_sensor_variant* a_sensor_variant) {
+    scd4x_sensor_variant ret_val = SCD4X_SENSOR_VARIANT_MASK;
     uint16_t raw_sensor_variant = 0;
+    uint16_t my_sensor_variant = 0;
     int16_t local_error = 0;
+    ret_val = SCD4X_SENSOR_VARIANT_MASK;
+    uint16_t mask = (uint16_t)(ret_val);
     local_error = scd4x_get_sensor_variant_raw(&raw_sensor_variant);
     if (local_error != NO_ERROR) {
         return local_error;
     }
-    uint16_t variant = (uint16_t)(raw_sensor_variant & 4);
-    if (variant == 0) {
-        *a_sensor_variant = SCD4X_SENSOR_VARIANT_SCD40;
-        ;
-        return local_error;
-    } else if (variant == 1) {
-        *a_sensor_variant = SCD4X_SENSOR_VARIANT_SCD41;
-        ;
-        return local_error;
+    my_sensor_variant = (uint16_t)(raw_sensor_variant & mask);
+    if (my_sensor_variant == (uint16_t)(SCD4X_SENSOR_VARIANT_SCD40)) {
+        ret_val = SCD4X_SENSOR_VARIANT_SCD40;
+    } else if (my_sensor_variant == (uint16_t)(SCD4X_SENSOR_VARIANT_SCD41)) {
+        ret_val = SCD4X_SENSOR_VARIANT_SCD41;
+    } else if (my_sensor_variant == (uint16_t)(SCD4X_SENSOR_VARIANT_SCD42)) {
+        ret_val = SCD4X_SENSOR_VARIANT_SCD42;
+    } else if (my_sensor_variant == (uint16_t)(SCD4X_SENSOR_VARIANT_SCD43)) {
+        ret_val = SCD4X_SENSOR_VARIANT_SCD43;
     }
-    *a_sensor_variant = SCD4X_SENSOR_VARIANT_UNKNOWN;
-    ;
+    *a_sensor_variant = ret_val;
     return local_error;
 }
 
diff --git a/scd4x_i2c.h b/scd4x_i2c.h
index 16138f6..1b7168b 100644
--- a/scd4x_i2c.h
+++ b/scd4x_i2c.h
@@ -46,6 +46,7 @@ extern "C" {
 #include "sensirion_config.h"
 #define SCD40_I2C_ADDR_62 0x62
 #define SCD41_I2C_ADDR_62 0x62
+#define SCD43_I2C_ADDR_62 0x62
 
 typedef enum {
     SCD4X_START_PERIODIC_MEASUREMENT_CMD_ID = 0x21b1,
@@ -81,9 +82,11 @@ typedef enum {
 } SCD4X_CMD_ID;
 
 typedef enum {
-    SCD4X_SENSOR_VARIANT_UNKNOWN = 0,
-    SCD4X_SENSOR_VARIANT_SCD40 = 1,
-    SCD4X_SENSOR_VARIANT_SCD41 = 2,
+    SCD4X_SENSOR_VARIANT_MASK = 0xF000,
+    SCD4X_SENSOR_VARIANT_SCD40 = 0x0000,
+    SCD4X_SENSOR_VARIANT_SCD41 = 0x1000,
+    SCD4X_SENSOR_VARIANT_SCD42 = 0x2000,
+    SCD4X_SENSOR_VARIANT_SCD43 = 0x5000
 } scd4x_sensor_variant;
 
 /**
@@ -686,7 +689,7 @@ int16_t scd4x_reinit();
  * @brief Reads out the SCD4x sensor variant.
  *
  * @param[out] sensor_variant Bits[15…12] = 0000 → SCD40 Bits[15…12] = 0001 →
- * SCD41
+ * SCD41 Bits[15…12] = 0101 → SCD43
  *
  * @note This command is only available in idle mode.
  *