Troubleshooting HP Printer Errors 0.x, 50.x, 79 & 30 Made Easy

[jasskarley]

Dealing with unexpected printer errors can bring your workflow to a halt—especially when you’re not sure what the error codes mean. If your HP printer 0.x, 50.x, 79, or 30, this guide will help you quickly identify the problem and fix it with confidence.
Let’s walk through each error code, what causes it, and how you can solve it—step by step.
🔧 What These HP Error Codes Mean
Error Code
General Cause0.x
Internal hardware or firmware issue
50.x
Fuser unit heating problem
79
Firmware crash or bad print job
30
Printing command failure from the computer

🛠️ Fixing HP Error Code 0.x
What it means:
This usually points to a firmware issue, memory problem, or a corrupted internal process.
How to fix it:

1. Power cycle your printer:
   Turn it off, unplug it for 60 seconds, then plug it back in and power on.
   
2. Update printer firmware:
   Visit HP’s official support site and download the latest firmware for your printer model.
   
3. Disconnect add-ons:
   Remove any external memory or accessories and restart the printer.
   
4. Factory reset (if necessary):
   Only do this if nothing else works and you have a backup of your settings.
   

♨️ Fixing HP Error Code 50.x
What it means:
This is a fuser error, meaning the component that heats toner onto paper isn’t working properly.
How to fix it:

1. Restart the printer.
   A temporary glitch may cause the error.
   
2. Plug the printer directly into the wall outlet.
   Avoid surge protectors or extension cords that may disrupt power.
   
3. Let it cool.
   Overheating can trigger this error. Wait 10–15 minutes before restarting.
   
4. Replace the fuser unit (if issue repeats).
   This may require a technician, depending on the model.
   

⚠️ Note: The number after "50" (like 50.2) gives more specific info about the fuser issue.
🔁 Fixing HP Error Code 79
What it means:
This error usually points to a firmware crash or a corrupted print job.
How to fix it:

1. Turn the printer off and on.
   If it starts up normally, it was likely a temporary glitch.
   
2. Disconnect all cables (network or USB)
   Then restart the printer. If the error clears, the issue is likely with a connected device or job.
   
3. Clear the print queue on your PC.
   Go to Devices and Printers > Right-click your printer > See what’s printing > Cancel All Documents.
   
4. Update printer firmware.
   Download from HP’s support page based on your model.
   

🖨️ Fixing HP Error Code 30
What it means:
This is a PC-side error saying the printer couldn’t receive a print command.
How to fix it:

1. Set your HP printer as default:
   • On Windows: Go to Settings > Devices > Printers & scanners > Select your HP printer > Set as default.
     
2. Reinstall the printer driver:
   • Go to HP’s website and download the latest driver for your model.
     
3. Restart the Print Spooler service:
   • Press
     Windows + R
     , type
     services.msc
     , find Print Spooler, right-click > Restart.
     
4. Check the connection:
   Ensure your printer is properly connected via USB or Wi-Fi and powered on.
   

💡 Extra Tips to Avoid HP Printer Errors

• Keep firmware and drivers up to date
  
• Use genuine HP toner and paper
  
• Avoid unplugging the printer while it’s in use
  
• Don’t overload print queues with large or corrupted documents
  
• Perform regular maintenance if prompted by the device
  

✅ Conclusion
Fixing HP printer errors 0.x, 50.x, 79, and 30 doesn’t require a technician or a service call in most cases. By following these simple troubleshooting steps, you can resolve issues yourself and get back to printing in no time.