Common symbols error messages on HP printers include exclamation marks, question marks, and various alphanumeric codes. Exclamation marks often indicate issues like paper jams or low ink levels. Question marks may signal printer malfunctions requiring troubleshooting. Alphanumeric codes, such as "0x..." or "B..." codes, provide specific error details related to hardware or software problems. These error messages can help users diagnose and resolve printer issues efficiently. Understanding the meaning behind these symbols is crucial for effective troubleshooting, ensuring smooth printer operation and minimizing downtime. HP's support documentation offers comprehensive guides to deciphering and resolving these common symbols error messages.