DEF pump not priming

[El_mavi]

Hi guys, 2021 International with Isx 15. Code 3548 active. Def not getting to exhaust nozzle or injector. If I unplug right hose from def tank I can see def flowing back to tank, no bubbles if plugged so I assume they are properly plugged where it belongs. So basically the is suction and return but not sending to nozzle. Air pressure getting to doser. All hoses free of restrictions. Any thoughts? Bad pump maybe? Insite solenoid test do click, and Insite pump override test does nothing. No def flowing to exhaust. Appreciate your help.