From a0462eb01738516561ea9356ebcafcb523782457 Mon Sep 17 00:00:00 2001
From: Keith Bennett <13375512+thisiskeithb@users.noreply.github.com>
Date: Fri, 5 Aug 2022 22:59:56 -0700
Subject: [PATCH] =?UTF-8?q?=F0=9F=A9=B9=20Fix=20AUTO=5FFAN=5FPIN=20sanity?=
 =?UTF-8?q?=20check=20(#24593)?=
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---
 Marlin/src/inc/SanityCheck.h | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Marlin/src/inc/SanityCheck.h b/Marlin/src/inc/SanityCheck.h
index cab8641e8a..bdcd1d3fce 100644
--- a/Marlin/src/inc/SanityCheck.h
+++ b/Marlin/src/inc/SanityCheck.h
@@ -2170,13 +2170,13 @@ static_assert(Y_MAX_LENGTH >= Y_BED_SIZE, "Movement bounds (Y_MIN_POS, Y_MAX_POS
  */
 #if HAS_AUTO_FAN
   #if HAS_FAN0
-    #if E0_AUTO_FAN_PIN == FAN_PIN
+    #if PIN_EXISTS(E0_AUTO_FAN) && E0_AUTO_FAN_PIN == FAN_PIN
       #error "You cannot set E0_AUTO_FAN_PIN equal to FAN_PIN."
-    #elif E1_AUTO_FAN_PIN == FAN_PIN
+    #elif PIN_EXISTS(E1_AUTO_FAN) && E1_AUTO_FAN_PIN == FAN_PIN
       #error "You cannot set E1_AUTO_FAN_PIN equal to FAN_PIN."
-    #elif E2_AUTO_FAN_PIN == FAN_PIN
+    #elif PIN_EXISTS(E2_AUTO_FAN) && E2_AUTO_FAN_PIN == FAN_PIN
       #error "You cannot set E2_AUTO_FAN_PIN equal to FAN_PIN."
-    #elif E3_AUTO_FAN_PIN == FAN_PIN
+    #elif PIN_EXISTS(E3_AUTO_FAN) &&  E3_AUTO_FAN_PIN == FAN_PIN
       #error "You cannot set E3_AUTO_FAN_PIN equal to FAN_PIN."
     #endif
   #endif