diff --git a/Marlin/src/HAL/HAL_DUE/fastio_Due.h b/Marlin/src/HAL/HAL_DUE/fastio_Due.h
index 1715ddecd..e44d1d1ee 100644
--- a/Marlin/src/HAL/HAL_DUE/fastio_Due.h
+++ b/Marlin/src/HAL/HAL_DUE/fastio_Due.h
@@ -62,14 +62,6 @@
 // Read a pin
 #define _READ(IO) bool(DIO ## IO ## _WPORT -> PIO_PDSR & MASK(DIO ## IO ## _PIN))
 
-// Write to a pin
-#define _WRITE_VAR(IO,V) do { \
-  volatile Pio* port = digitalPinToPort(IO); \
-  const uint32_t mask = digitalPinToBitMask(IO); \
-  if (V) port->PIO_SODR = mask; \
-  else port->PIO_CODR = mask; \
-} while(0)
-
 // Write to a pin
 #define _WRITE(IO,V) do { \
   volatile Pio* port = (DIO ##  IO ## _WPORT); \
@@ -160,7 +152,6 @@
 #define READ(IO)             _READ(IO)
 
 // Write to a pin (wrapper)
-#define WRITE_VAR(IO,V)      _WRITE_VAR(IO,V)
 #define WRITE(IO,V)          _WRITE(IO,V)
 
 // Toggle a pin (wrapper)
diff --git a/Marlin/src/HAL/HAL_LINUX/fastio.h b/Marlin/src/HAL/HAL_LINUX/fastio.h
index fc5f59a8f..5c2d6fcb7 100644
--- a/Marlin/src/HAL/HAL_LINUX/fastio.h
+++ b/Marlin/src/HAL/HAL_LINUX/fastio.h
@@ -51,8 +51,6 @@
 #define _READ(IO)             READ_PIN(IO)
 
 /// Write to a pin
-#define _WRITE_VAR(IO,V)      digitalWrite(IO,V)
-
 #define _WRITE(IO,V)          WRITE_PIN(IO,V)
 
 /// toggle a pin
@@ -84,7 +82,6 @@
 #define READ(IO)             _READ(IO)
 
 /// Write to a pin wrapper
-#define WRITE_VAR(IO,V)      _WRITE_VAR(IO,V)
 #define WRITE(IO,V)          _WRITE(IO,V)
 
 /// toggle a pin wrapper
diff --git a/Marlin/src/HAL/HAL_LPC1768/fastio.h b/Marlin/src/HAL/HAL_LPC1768/fastio.h
index e4b870326..a00a4946c 100644
--- a/Marlin/src/HAL/HAL_LPC1768/fastio.h
+++ b/Marlin/src/HAL/HAL_LPC1768/fastio.h
@@ -63,8 +63,6 @@
 #define _READ(IO)             READ_PIN(IO)
 
 /// Write to a pin
-#define _WRITE_VAR(IO,V)      digitalWrite(IO,V)
-
 #define _WRITE(IO,V)          WRITE_PIN(IO,V)
 
 /// toggle a pin
@@ -92,7 +90,6 @@
 #define READ(IO)              _READ(IO)
 
 /// Write to a pin wrapper
-#define WRITE_VAR(IO,V)       _WRITE_VAR(IO,V)
 #define WRITE(IO,V)           _WRITE(IO,V)
 
 /// toggle a pin wrapper
diff --git a/Marlin/src/HAL/HAL_STM32/fastio_STM32.h b/Marlin/src/HAL/HAL_STM32/fastio_STM32.h
index 6518dfc25..fd97fd206 100644
--- a/Marlin/src/HAL/HAL_STM32/fastio_STM32.h
+++ b/Marlin/src/HAL/HAL_STM32/fastio_STM32.h
@@ -65,7 +65,6 @@ void FastIO_init(); // Must be called before using fast io macros
 #define _SET_MODE(IO,M)         pinMode(IO, M)
 #define _SET_OUTPUT(IO)         pinMode(IO, OUTPUT)                               /*!< Output Push Pull Mode & GPIO_NOPULL   */
 
-#define WRITE_VAR(IO,V)         _WRITE(IO,V)
 #define WRITE(IO,V)             _WRITE(IO,V)
 #define READ(IO)                _READ(IO)
 #define TOGGLE(IO)              _TOGGLE(IO)
diff --git a/Marlin/src/HAL/HAL_STM32F1/fastio_STM32F1.h b/Marlin/src/HAL/HAL_STM32F1/fastio_STM32F1.h
index 1a7ac719c..fe09de3eb 100644
--- a/Marlin/src/HAL/HAL_STM32F1/fastio_STM32F1.h
+++ b/Marlin/src/HAL/HAL_STM32F1/fastio_STM32F1.h
@@ -32,7 +32,6 @@
 #define READ(IO)              (PIN_MAP[IO].gpio_device->regs->IDR & (1U << PIN_MAP[IO].gpio_bit) ? HIGH : LOW)
 #define WRITE(IO,V)           (PIN_MAP[IO].gpio_device->regs->BSRR = (1U << PIN_MAP[IO].gpio_bit) << ((V) ? 0 : 16))
 #define TOGGLE(IO)            (PIN_MAP[IO].gpio_device->regs->ODR = PIN_MAP[IO].gpio_device->regs->ODR ^ (1U << PIN_MAP[IO].gpio_bit))
-#define WRITE_VAR(IO,V)       WRITE(IO,V)
 
 #define _GET_MODE(IO)         gpio_get_mode(PIN_MAP[IO].gpio_device, PIN_MAP[IO].gpio_bit)
 #define _SET_MODE(IO,M)       gpio_set_mode(PIN_MAP[IO].gpio_device, PIN_MAP[IO].gpio_bit, M)
diff --git a/Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h b/Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h
index 7c07b0a60..a657d2c74 100644
--- a/Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h
+++ b/Marlin/src/HAL/HAL_STM32F4/fastio_STM32F4.h
@@ -32,7 +32,6 @@
 
 #define READ(IO)                digitalRead(IO)
 #define WRITE(IO,V)             digitalWrite(IO,V)
-#define WRITE_VAR(IO,V)         WRITE(IO,V)
 
 #define _GET_MODE(IO)
 #define _SET_MODE(IO,M)         pinMode(IO, M)
diff --git a/Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h b/Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h
index d72b3c845..81f363609 100644
--- a/Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h
+++ b/Marlin/src/HAL/HAL_STM32F7/fastio_STM32F7.h
@@ -31,7 +31,6 @@
 
 #define READ(IO)                digitalRead(IO)
 #define WRITE(IO,V)             digitalWrite(IO,V)
-#define WRITE_VAR(IO,V)         WRITE(IO,V)
 
 #define _GET_MODE(IO)
 #define _SET_MODE(IO,M)         pinMode(IO, M)
diff --git a/Marlin/src/HAL/HAL_TEENSY31_32/fastio_Teensy.h b/Marlin/src/HAL/HAL_TEENSY31_32/fastio_Teensy.h
index 02786141c..2af63de81 100644
--- a/Marlin/src/HAL/HAL_TEENSY31_32/fastio_Teensy.h
+++ b/Marlin/src/HAL/HAL_TEENSY31_32/fastio_Teensy.h
@@ -72,7 +72,6 @@
 
 #define READ(IO)              _READ(IO)
 
-#define WRITE_VAR(IO,V)       _WRITE_VAR(IO,V)
 #define WRITE(IO,V)           _WRITE(IO,V)
 #define TOGGLE(IO)            _TOGGLE(IO)
 
diff --git a/Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h b/Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h
index c328c49d2..d1b5f567d 100644
--- a/Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h
+++ b/Marlin/src/HAL/HAL_TEENSY35_36/fastio_Teensy.h
@@ -71,7 +71,6 @@
 
 #define READ(IO)              _READ(IO)
 
-#define WRITE_VAR(IO,V)       _WRITE_VAR(IO,V)
 #define WRITE(IO,V)           _WRITE(IO,V)
 #define TOGGLE(IO)            _TOGGLE(IO)