diff --git a/code/game/machinery/doors/airlock_control.dm b/code/game/machinery/doors/airlock_control.dm
index 388f907aec7..38109eeafc4 100644
--- a/code/game/machinery/doors/airlock_control.dm
+++ b/code/game/machinery/doors/airlock_control.dm
@@ -165,7 +165,9 @@
 		var/datum/gas_mixture/air_sample = return_air()
 		var/new_pressure = round(air_sample.return_pressure(),0.1)
 
-		if(abs(pressure - new_pressure) > 0.001 || pressure == null)
+		//Try preventing the sensor from spamming when there's no differences, and the controller isn't cycling.
+		//Can't rely only on difference, since it's possible for the pressure to stay nearly the same for a few calls, which prevents the machine var from updating
+		if(abs(pressure - new_pressure) > 0.001 || master_cycling)
 			var/decl/public_access/public_variable/airlock_pressure/pressure_var = GET_DECL(/decl/public_access/public_variable/airlock_pressure)
 			pressure_var.write_var(src, new_pressure)
 
diff --git a/code/game/machinery/embedded_controller/airlock_program.dm b/code/game/machinery/embedded_controller/airlock_program.dm
index 5ebc5f34104..98d6da3bd30 100644
--- a/code/game/machinery/embedded_controller/airlock_program.dm
+++ b/code/game/machinery/embedded_controller/airlock_program.dm
@@ -89,8 +89,7 @@
 	if(!receive_tag) return
 
 	if(receive_tag==tag_chamber_sensor)
-		if(signal.data["pressure"])
-			memory["chamber_sensor_pressure"] = text2num(signal.data["pressure"])
+		memory["chamber_sensor_pressure"] = text2num(signal.data["pressure"])
 
 	else if(receive_tag==tag_exterior_sensor)
 		memory["external_sensor_pressure"] = text2num(signal.data["pressure"])