48
HP Printer
Severity:What Does This Error Mean?
HP printer error 48 indicates a problem with data transfer — specifically, the printer experienced an error processing data from an external source such as a computer or external storage device. This can happen when print job data is interrupted, corrupted, or sent in an unexpected format. A power cycle and driver update usually resolves it.
Affected Models
- HP LaserJet 4200
- HP LaserJet 4300
- HP LaserJet 4250
- HP LaserJet 4350
- Select HP LaserJet series printers
Common Causes
- A print job was interrupted mid-transfer, leaving incomplete data in the printer's buffer
- The data connection (USB, network, or parallel port) dropped during printing
- The printer driver sent data in an unexpected or malformed format
- A firmware bug is causing the printer to reject certain data structures
- The printer's RAM buffer was overloaded by a very large or complex print job
How to Fix It
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Power off the printer completely. Wait 60 seconds, then power it back on.
This clears the printer's memory buffer, which removes any corrupted data that triggered error 48.
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Delete all pending print jobs from the print queue on your computer.
Open your computer's printer queue and cancel every job. Then try a fresh print after the printer restarts.
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Check and reconnect the data cable (USB or network cable).
A loose or failing cable can cause data to arrive corrupted. Try a different cable if possible.
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Update the printer firmware from HP's support website.
Firmware bugs sometimes cause error 48. Check hp.com/support for firmware updates for your specific model.
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Try printing a different, simpler document.
If the error only occurs with one specific file, that file may be corrupted or too complex for the printer's memory. Try a plain text or simple PDF document.
When to Call a Professional
If error 48 appears frequently across different computers and different documents, the printer's memory or formatter board may be faulty. A technician can run a diagnostic and replace the formatter board if needed. Formatter board replacement for LaserJet printers typically costs $150–$400.
Frequently Asked Questions
What is the printer memory buffer and how does it cause errors?
The printer has RAM (memory) where it stores the print job data while it's processing. If the data arrives faster than the printer can process, or if it's incomplete, the buffer can overflow or hold bad data. This triggers errors like 48. A restart clears the buffer and lets the printer start fresh.
Why does error 48 only happen with certain documents?
Complex documents — those with many high-resolution images, embedded fonts, or transparency effects — require more memory to process. If a document exceeds what the printer can handle, it errors out. Simplify the document by reducing image resolution or printing in draft mode.
Can adding RAM to my HP LaserJet printer fix error 48?
Yes — many HP LaserJet printers have RAM expansion slots. Adding more memory helps the printer handle complex print jobs that would otherwise overflow the buffer. Check your printer's specifications to see the maximum RAM it supports. More RAM is especially helpful when printing large PDFs, graphics-heavy documents, or duplex print jobs.