diff --git a/Marlin/Conditionals.h b/Marlin/Conditionals.h
index 91760045d741acbf94cb6cbc4be4b68fc226fb8e..7063b198e7258da0087c3718ee3ac764b8d490d4 100644
--- a/Marlin/Conditionals.h
+++ b/Marlin/Conditionals.h
@@ -440,7 +440,9 @@
     #define HEATER_0_USES_THERMISTOR
   #endif
 
-  #if TEMP_SENSOR_1 == -1
+  #if TEMP_SENSOR_1 <= -2
+    #error MAX6675 / MAX31855 Thermocouples not supported for TEMP_SENSOR_1
+  #elif TEMP_SENSOR_1 == -1
     #define HEATER_1_USES_AD595
   #elif TEMP_SENSOR_1 == 0
     #undef HEATER_1_MINTEMP
@@ -450,7 +452,9 @@
     #define HEATER_1_USES_THERMISTOR
   #endif
 
-  #if TEMP_SENSOR_2 == -1
+  #if TEMP_SENSOR_2 <= -2
+    #error MAX6675 / MAX31855 Thermocouples not supported for TEMP_SENSOR_2
+  #elif TEMP_SENSOR_2 == -1
     #define HEATER_2_USES_AD595
   #elif TEMP_SENSOR_2 == 0
     #undef HEATER_2_MINTEMP
@@ -460,7 +464,9 @@
     #define HEATER_2_USES_THERMISTOR
   #endif
 
-  #if TEMP_SENSOR_3 == -1
+  #if TEMP_SENSOR_3 <= -2
+    #error MAX6675 / MAX31855 Thermocouples not supported for TEMP_SENSOR_3
+  #elif TEMP_SENSOR_3 == -1
     #define HEATER_3_USES_AD595
   #elif TEMP_SENSOR_3 == 0
     #undef HEATER_3_MINTEMP
@@ -470,7 +476,9 @@
     #define HEATER_3_USES_THERMISTOR
   #endif
 
-  #if TEMP_SENSOR_BED == -1
+  #if TEMP_SENSOR_BED <= -2
+    #error MAX6675 / MAX31855 Thermocouples not supported for TEMP_SENSOR_BED
+  #elif TEMP_SENSOR_BED == -1
     #define BED_USES_AD595
   #elif TEMP_SENSOR_BED == 0
     #undef BED_MINTEMP
@@ -498,11 +506,11 @@
   /**
    * Shorthand for pin tests, used wherever needed
    */
-  #define HAS_TEMP_0 (PIN_EXISTS(TEMP_0) && TEMP_SENSOR_0 != 0 && TEMP_SENSOR_0 != -2)
-  #define HAS_TEMP_1 (PIN_EXISTS(TEMP_1) && TEMP_SENSOR_1 != 0)
-  #define HAS_TEMP_2 (PIN_EXISTS(TEMP_2) && TEMP_SENSOR_2 != 0)
-  #define HAS_TEMP_3 (PIN_EXISTS(TEMP_3) && TEMP_SENSOR_3 != 0)
-  #define HAS_TEMP_BED (PIN_EXISTS(TEMP_BED) && TEMP_SENSOR_BED != 0)
+  #define HAS_TEMP_0 (PIN_EXISTS(TEMP_0) && TEMP_SENSOR_0 != 0 && TEMP_SENSOR_0 > -2)
+  #define HAS_TEMP_1 (PIN_EXISTS(TEMP_1) && TEMP_SENSOR_1 != 0 && TEMP_SENSOR_1 > -2)
+  #define HAS_TEMP_2 (PIN_EXISTS(TEMP_2) && TEMP_SENSOR_2 != 0 && TEMP_SENSOR_2 > -2)
+  #define HAS_TEMP_3 (PIN_EXISTS(TEMP_3) && TEMP_SENSOR_3 != 0 && TEMP_SENSOR_3 > -2)
+  #define HAS_TEMP_BED (PIN_EXISTS(TEMP_BED) && TEMP_SENSOR_BED != 0 && TEMP_SENSOR_BED > -2)
   #define HAS_HEATER_0 (PIN_EXISTS(HEATER_0))
   #define HAS_HEATER_1 (PIN_EXISTS(HEATER_1))
   #define HAS_HEATER_2 (PIN_EXISTS(HEATER_2))
@@ -581,6 +589,8 @@
 
   #define HAS_MOTOR_CURRENT_PWM (PIN_EXISTS(MOTOR_CURRENT_PWM_XY) || PIN_EXISTS(MOTOR_CURRENT_PWM_Z) || PIN_EXISTS(MOTOR_CURRENT_PWM_E))
 
+  #define HAS_TEMP_HOTEND (HAS_TEMP_0 || ENABLED(HEATER_0_USES_MAX6675))
+
   /**
    * Helper Macros for heaters and extruder fan
    */
diff --git a/Marlin/Marlin.h b/Marlin/Marlin.h
index c425a3b04941820db409c1c333cd68a3f99941e7..c6274056c1b65a37f6cf9f6aae843a89cc10dfac 100644
--- a/Marlin/Marlin.h
+++ b/Marlin/Marlin.h
@@ -368,7 +368,7 @@ extern uint8_t active_extruder;
   extern void digipot_i2c_init();
 #endif
 
-#if HAS_TEMP_0 || HAS_TEMP_BED || ENABLED(HEATER_0_USES_MAX6675)
+#if HAS_TEMP_HOTEND || HAS_TEMP_BED
   void print_heaterstates();
 #endif
 
diff --git a/Marlin/Marlin_main.cpp b/Marlin/Marlin_main.cpp
index 968555ca4aa2087869107c1559635bf30df69a63..99192f4f1cafafb0f71d3e4bd24066442a2b5f96 100644
--- a/Marlin/Marlin_main.cpp
+++ b/Marlin/Marlin_main.cpp
@@ -4100,10 +4100,10 @@ inline void gcode_M104() {
   if (print_job_stop()) LCD_MESSAGEPGM(WELCOME_MSG);
 }
 
-#if HAS_TEMP_0 || HAS_TEMP_BED || ENABLED(HEATER_0_USES_MAX6675)
+#if HAS_TEMP_HOTEND || HAS_TEMP_BED
 
   void print_heaterstates() {
-    #if HAS_TEMP_0 || ENABLED(HEATER_0_USES_MAX6675)
+    #if HAS_TEMP_HOTEND
       SERIAL_PROTOCOLPGM(" T:");
       SERIAL_PROTOCOL_F(degHotend(target_extruder), 1);
       SERIAL_PROTOCOLPGM(" /");
@@ -4179,10 +4179,10 @@ inline void gcode_M104() {
 inline void gcode_M105() {
   if (setTargetedHotend(105)) return;
 
-  #if HAS_TEMP_0 || HAS_TEMP_BED || ENABLED(HEATER_0_USES_MAX6675)
+  #if HAS_TEMP_HOTEND || HAS_TEMP_BED
     SERIAL_PROTOCOLPGM(MSG_OK);
     print_heaterstates();
-  #else // !HAS_TEMP_0 && !HAS_TEMP_BED
+  #else // !HAS_TEMP_HOTEND && !HAS_TEMP_BED
     SERIAL_ERROR_START;
     SERIAL_ERRORLNPGM(MSG_ERR_NO_THERMISTORS);
   #endif
@@ -4271,7 +4271,7 @@ inline void gcode_M109() {
     now = millis();
     if (now > next_temp_ms) { //Print temp & remaining time every 1s while waiting
       next_temp_ms = now + 1000UL;
-      #if HAS_TEMP_0 || HAS_TEMP_BED || ENABLED(HEATER_0_USES_MAX6675)
+      #if HAS_TEMP_HOTEND || HAS_TEMP_BED
         print_heaterstates();
       #endif
       #ifdef TEMP_RESIDENCY_TIME
diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index d20b6e7054bb4bbc18042a108ce75af960ba0533..22797a06fbcf995a684bb1e9e45b29ab0cb77218 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -350,7 +350,7 @@ void PID_autotune(float temp, int extruder, int ncycles, bool set_result/*=false
     }
     // Every 2 seconds...
     if (ms > temp_ms + 2000) {
-      #if HAS_TEMP_0 || HAS_TEMP_BED || ENABLED(HEATER_0_USES_MAX6675)
+      #if HAS_TEMP_HOTEND || HAS_TEMP_BED
         print_heaterstates();
         SERIAL_EOL;
       #endif
@@ -1183,7 +1183,7 @@ void disable_all_heaters() {
     WRITE_HEATER_ ## NR (LOW); \
   }
 
-  #if HAS_TEMP_0 || ENABLED(HEATER_0_USES_MAX6675)
+  #if HAS_TEMP_HOTEND
     setTargetHotend(0, 0);
     soft_pwm[0] = 0;
     WRITE_HEATER_0P(LOW); // Should HEATERS_PARALLEL apply here? Then change to DISABLE_HEATER(0)