Code 119 Injector Open or Shorted

Hello to all, I'm a new member. My Aurora has ben running pretty ruff lately. I did a full tuneup which i thought fix the problem to no avail, so i had the car scanned and received a code 119 injector open or shorted. I've asked around and no one seems to know how to go about checking the injectors or how to fix this problem. Could someone please assist me?

Hello to all, I'm a new member. My Aurora has ben running pretty ruff lately. I did a full tuneup which i thought fix the problem to no avail, so i had the car scanned and received a code 119 injector open or shorted. I've asked around and no one seems to know how to go about checking the injectors or how to fix this problem. Could someone please assist me?
Welcome to AF. No misfire code? This would pinpoint the cylinder. Anyway, if you can see the injetcors look for corroded or bad connections at each connector, if none check the injector resistance to see if there is an internal problem. About 11.0 to 12.5 ohms. BTW, didn't see a 119 in the obd11 list.

No I didn't have any misfire codes,

Btw thanks for your reply, i just checked for resistance and got about 10.2 from the harnest at each output and around 12.6 at each injector all around. Does that sound right?