If you've installed an Automatic Bed Leveling system on your 3D printer and you're experiencing filament ooze from your nozzle before the ABL does a mesh this video will show you how to fix the problem.

00:00 Intro
03:10 Gcode Instructions Cura
09:41 Testing on Ender 3 Pro
11:12 Outro

HERE'S THE ENDER 3/ENDER 3 PRO GCODE. IT SHOULD WORK ON OTHER PRINTERS AS WELL.

CURA

; Ender 3 Custom Start Gcode
G92 E0 ; Reset Extruder
G28 ; Home all axes

M104 S140 ; Set Extruder temperature
M140 S{material_bed_temperature_layer_0} ; Set Heat Bed temperature
M190 S{material_bed_temperature_layer_0} ; Wait for Heat Bed temperature

G29 ; Initiate Bed Leveling
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X0.1 Y20 Z0.3 F5000.0 ; Move to start position

M104 S{material_print_temperature_layer_0} ; Set Extruder temperature
M109 S{material_print_temperature_layer_0} ; Wait for Extruder temperature

G1 X0.1 Y200.0 Z0.3 F1500.0 E15 ; Draw the first line
G1 X0.4 Y200.0 Z0.3 F5000.0 ; Move to side a little
G1 X0.4 Y20 Z0.3 F1500.0 E30 ; Draw the second line
G92 E0 ; Reset Extruder
G1 Z2.0 F3000 ; Move Z Axis up little to prevent scratching of Heat Bed
G1 X5 Y20 Z0.3 F5000.0 ; Move over to prevent blob squish

PRUSASLICER

G90 ; use absolute coordinates
M83 ; extruder relative mode
M140 S{first_layer_bed_temperature[0]} ; set final bed temp
M104 S140 ; set temporary nozzle temp to prevent oozing during homing and auto bed leveling
G4 S10 ; allow partial nozzle warmup
G28 ; home all axis
G29 ; auto bed levelling
G1 Z50 F240
G1 X2 Y10 F3000
M104 S{first_layer_temperature[0]} ; set final nozzle temp
M190 S{first_layer_bed_temperature[0]} ; wait for bed temp to stabilize
M109 S{first_layer_temperature[0]} ; wait for nozzle temp to stabilize
G1 Z0.28 F240
G92 E0
G1 Y140 E10 F1500 ; prime the nozzle
G1 X2.3 F5000
G92 E0
G1 Y10 E10 F1200 ; prime the nozzle
G92 E0