printing green instead of yellow. replaced with OEM cartridges twice, problem remains

[MarVern]

I started having issues with my yellow, so I replaced the cartridge thinking it must be out and the status bar was incorrect. No, a brand new OEM HP yellow did still did not work. ONly prints green. So I used it for a while thinking it would "clear up" on its own.  Got tired of it, so I replaced ALL 3 colors with brand new OEM and Still, no yellow, just green comes out when I print a test page. cyan and magenta look pretty normal, but yellow is a definate green. 

[midnight-anwrs]

Evening @MarVern,

I see from your post that your Officejet Pro 8600 Plus is printing green instead of yellow, and I may be able to offer you some further assistance.

I was wondering, have you tried all the steps in this document; Fixing Print Quality Problems for the HP Officejet Pro 8600 e-All-in-One Printer Series?

Other then the steps in the above document, there are certain steps from another that may also be applicable, even though you aren't experiencing the specific error message;  An 'Ink System Failure' Error Message Displays on the Printer - I have copied the specific steps here for you:

Step 4: Clean the ink cartridges, and then check the error message

Cleaning the ink cartridge contacts and replacing them one at a time can help determine if a specific ink cartridge is causing the error message.

1. Gather the following materials:
   1. Distilled or bottled water (tap water can damage the ink cartridges)
   2. A clean, lint-free cloth
   3. A clean, dry cotton swab
2. Lightly dampen a clean, lint-free cloth with bottled or distilled water.
3. Gently wipe the copper-colored contact on one of the ink cartridges.
   
   
   Figure : Copper-colored contact on the ink cartridge
   
   

   
   
   
4. Wipe the contact with a dry lint-free cloth before proceeding to the next step.
5. Repeat steps 2-4 for the three remaining ink cartridges.
6. Carefully reinsert one of the ink cartridges into its slot, and then push the ink cartridge forward until it clicks into place.
   
   
   Figure : Push the ink cartridge forward in the slot until it clicks into place
   
   

   
   
   
7. Close the ink cartridge access door.
   
   
   Figure : Close the ink cartridge access door
   
   

   

Try to print again, if the issue persists try the next steps.

Step 6: Remove the printhead

1. Press the Power button to turn on the printer, if it is not already on. Wait until the warm-up period finishes and your printer is idle and silent before you proceed.
2. Place your fingers into the slot on the left side of the printer, and then pull to open the cartridge access door. Allow the carriage to move to the cartridge access area, and the carriage stops moving.
   
   
   Figure : The slot on the side of the printer
   
   

   
   
   
3. Disconnect the power cord from the rear of the printer. Unplugging the printer prevents the carriage from moving.
   
   

   WARNING: You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.

4. Lift the carriage latch.
   
   
   Figure : Lift the carriage latch
   
   

   
   
   
5. Grasp the sides of the printhead, gently lift and remove the printhead from the carriage.
   
   

   NOTE: Do not remove the cartridges from the printhead. You can safely remove the printhead with all of the cartridges inserted.

   Figure : Remove the printhead
   
   

   
   
   

   CAUTION: The nozzle area on the bottom of the printhead is fragile! Make sure that the bottom of the printhead does not bump or rub on the printer. Do not touch the nozzles or electrical contacts. Touching these areas can cause electrical failures or print quality problems.

   Figure : Nozzles and electrical contacts
   
   

   
   
   

   1. Nozzles
   2. Electrical contacts, make sure there is no ink on the contacts
      
      
      

Step 8: Insert the printhead, and then lower the carriage latch

1. Grasp the sides of the printhead and turn it right side up with the nozzles facing down and the electrical contacts facing away from you.
2. On the front of the printer, insert the printhead into the carriage, ensuring that the electrical contacts face the inside of the printer. As you guide the printhead into the carriage, it lowers into the carriage as it seats.
   
   

   CAUTION: The nozzle area on the bottom of the printhead is fragile! Make sure that the bottom of the printhead does not bump or rub on the printer. Do not touch the nozzles or electrical contacts. Touching these areas can cause electrical failures or print quality problems.

   Figure : Insert the printhead
   
   

   
   
   
3. Gently rock the printhead to the left and right to make sure that the printhead fully seats in the carriage.
4. Carefully lower the carriage latch to secure the printhead.
   
   
   Figure : Lower the carriage latch
   
   

   
   
   
5. Verify that the carriage latch is down.
   
   
   Figure : Carriage latch positions
   
   

   
   
   

   1. Carriage latch is up
   2. Carriage latch is down
6. Close the cartridge access door.
7. Reconnect the power cord to the rear of the printer.
8. If the printer does not turn on by itself, press the Power button to turn it on.
   
   

   NOTE: The printer might go through a warm-up period. The printer lights might flash, and the carriage might move.

9. Wait until the warm-up period finishes and your printer is idle and silent before you proceed.

If the error message persists, continue to the next step.

Step 9: Reseat the printhead up to three times

 NOTE: You do not need to remove the printhead from the carriage.

1. Slip your fingers into the slot on the left side of the printer, and then pull forward to open the cartridge access door. The carriage moves to the left side of the printer. Wait until the carriage is idle and silent before proceeding.
   
   
   Figure : Open the cartridge access door
   
   

   
   
   

   1. Slot on the left side of the printer
2. Unplug the power cord from the rear of the printer. Unplugging the printer prevents the carriage from moving.
   
   

   WARNING: You must disconnect the power cord before reaching inside the printer to avoid risk of injuries or electric shock.

3. Lift the carriage latch. 
   
   
   Figure : Lift the carriage latch
   
   

   
   
   
4. Grasp the sides of the printhead, and then slightly lift the printhead without fully removing it from the carriage.
   
   
   Figure : Slightly lift the printhead
   
   

   
   
   
5. Reinsert the printhead into the carriage to reseat it. As you guide the printhead into the carriage, it lowers into the carriage as it seats.
   
   
   Figure : Reseat the printhead
   
   

   
   
   
6. Gently rock the printhead to the left and right to make sure that the printhead fully seats in the carriage.
7. Lower the carriage latch.
   
   
   Figure : Lower the carriage latch
   
   

   
   
   
8. Verify that the carriage latch is down.
   
   
   Figure : Carriage latch positions
   
   

   
   
   

   1. Carriage latch is up
   2. Carriage latch is down
9. Close the cartridge access door.
10. Reconnect the power cord to the rear of the printer.
11. If the printer does not turn on by itself, press the Power button to turn it on.
12. Wait until the warm-up period finishes and your printer is idle and silent before you proceed.

If the issue continues, please Contact HP Support for further assistance. Fill in the model number and the form to receive a case number for quicker assistance.

Please let me know if any of these steps resolved your issue, or if there is anything else I can do to help. 

I look forward to hearing from you!

Thanks,