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49.4C02HP

HP Error 49.4C02

What it means

Error 49.4C02 on an HP LaserJet is a firmware error, usually triggered by a corrupt or incompatible print job that the printer’s firmware could not process. It often locks the printer until you power-cycle it. The fix is to clear the offending job and, if it recurs, update the firmware.

A HP printer

How to fix it

Try these in order — most HP 49.4C02 cases clear within the first couple of steps.

  1. Step 1 of 2

    Power-cycle and clear the stuck job

    Restart the printer and delete the bad job.

    1. Turn the printer off, wait 30 seconds, and turn it back on to clear the lock.
    2. On the computer, open the print queue and delete all pending jobs, especially the last one sent.
    3. Restart the Print Spooler service if any job refuses to clear.
  2. Step 2 of 2

    Update the printer firmware

    A firmware update prevents the error recurring.

    • Download the latest firmware for your exact LaserJet model from hp.com.
    • Install it over USB or network following HP’s instructions, keeping the printer powered throughout.

Still stuck after these steps? The HP help hub covers more issues, or browse all error codes.

Where to go next

HP help hubCommon HP LaserJet issues and fixes.Read guide →Printer not printingClearing the print queue and spooler in detail.Read guide →