# Weird Taz 6 z-probing behavior in 1.1.9+ **URL:** \ **Category:** Software\ **Created:** [September 13, 2018, 2:10am UTC](https://forum.lulzbot.com/t/weird-taz-6-z-probing-behavior-in-1-1-9/6175 "2018-09-13T02:10:12Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![chilicoke](https://avatars.discourse-cdn.com/v4/letter/c/7bcc69/32.png) [@chilicoke](https://forum.lulzbot.com/u/chilicoke)\ **Post date:** [September 13, 2018, 2:10am UTC](https://forum.lulzbot.com/t/weird-taz-6-z-probing-behavior-in-1-1-9/6175/1 "2018-09-13T02:10:12Z")
Just curious if anyone is having this issue with firmware 1.1.9+. After updating to 1.1.91.13 (coming from 1.1.8.62) I’ve noticed that z prob after nozzle wipe will always fail if auto level had been successful prior to having this problem. If I just turn on the printer and start a print, auto level Z prob always works perfectly and I’d have no problem printing. However if I either start another print after prior print finished, or if I start a new print after cancelling the previous print (after prior auto level prob was successful), the z-prob on the first washer after wiping nozzle will always travel in the wrong direction and lift the print head after it’s in position instead of going down towards the washer, causing the first prob to fail and the printer will attempt to clean the nozzle again, in mid air because Z went the wrong direction. I’ve updated again to 1.1.9.16 (RC) and the problem is still there. Basically I’d have to restart the printer now after each successful/cancelled print. Thanks! ---
**Author:** ![zachah](https://avatars.discourse-cdn.com/v4/letter/z/919ad9/32.png) [@zachah](https://forum.lulzbot.com/u/zachah)\ **Post date:** [September 13, 2018, 8:23pm UTC](https://forum.lulzbot.com/t/weird-taz-6-z-probing-behavior-in-1-1-9/6175/2 "2018-09-13T20:23:21Z")
I made a code ticket about this issue and they were able to solve it by editing the start gcode. [https://code.alephobjects.com/T3512](https://code.alephobjects.com/T3512) Try using this as your start gcode if you’ve got the standard extruder. ;This G-Code has been generated specifically for the LulzBot TAZ 6 with standard extruder M75 ; start GLCD timer G26 ; clear potential ‘probe fail’ condition G21 ; set units to Millimetres M107 ; disable fans M420 S0 ; Disable previous leveling matrix G90 ; absolute positioning M82 ; set extruder to absolute mode G92 E0 ; set extruder position to 0 M140 S{material\_bed\_temperature} ; start bed heating up M109 R{material\_soften\_temperature} ; soften filament before homing Z G28 ; Home all axis G1 E-30 F100 ; retract filament M109 R{material\_wipe\_temperature} ; wait for extruder to reach wiping temp G1 X-15 Y100 F3000 ; move above wiper pad G1 Z1 ; push nozzle into wiper G1 X-17 Y95 F1000 ; slow wipe G1 X-17 Y90 F1000 ; slow wipe G1 X-17 Y85 F1000 ; slow wipe G1 X-15 Y90 F1000 ; slow wipe G1 X-17 Y80 F1000 ; slow wipe G1 X-15 Y95 F1000 ; slow wipe G1 X-17 Y75 F2000 ; fast wipe G1 X-15 Y65 F2000 ; fast wipe G1 X-17 Y70 F2000 ; fast wipe G1 X-15 Y60 F2000 ; fast wipe G1 X-17 Y55 F2000 ; fast wipe G1 X-15 Y50 F2000 ; fast wipe G1 X-17 Y40 F2000 ; fast wipe G1 X-15 Y45 F2000 ; fast wipe G1 X-17 Y35 F2000 ; fast wipe G1 X-15 Y40 F2000 ; fast wipe G1 X-17 Y70 F2000 ; fast wipe G1 X-15 Y30 Z2 F2000 ; fast wipe G1 X-17 Y35 F2000 ; fast wipe G1 X-15 Y25 F2000 ; fast wipe G1 X-17 Y30 F2000 ; fast wipe G1 X-15 Y25 Z1.5 F1000 ; slow wipe G1 X-17 Y23 F1000 ; slow wipe G1 Z10 ; raise extruder M109 R{material\_probe\_temperature} ; wait for extruder to reach probe temp G1 X-9 Y-9 ; move above first probe point M204 S100 ; set probing acceleration G29 ; start auto-leveling sequence M420 S1 ; Activate bed level matrix M425 Z ; use measured Z backlash for compensation M425 Z F0 ; turn off measured Z backlash compensation. (if activated in the quality settings, this command will automatically be ignored) M204 S500 ; restore standard acceleration G1 X0 Y0 Z15 F5000 ; move up off last probe point G4 S1 ; pause M400 ; wait for moves to finish M117 Heating… ; progress indicator message on LCD M109 R{material\_print\_temperature\_layer\_0} ; wait for extruder to reach printing temp M190 S{material\_bed\_temperature\_layer\_0} ; wait for bed to reach printing temp G1 Z2 E0 F75 ; prime tiny bit of filament into the nozzle M117 TAZ 6 Printing… ; progress indicator message on LCD