Troubleshooting guide for HP Printer not displaying correct toner levels. Learn how to fix inaccurate toner readings and maintain your printer's performance. Not displaying the correct ink or toner levels can be one of the major issues that can cause stress to regular users who frequently use the printer. In this part of the post, you can find some common reasons for which the display of the ink or toner levels is not correct. Using improper HP ink or toner could be a great way to deal with the issue.