HP error code 33.05.1X
Quick answer
Whitelisting error: a firmware file's digital signature failed validation, indicating tampering or a certificate problem. HP's fix: perform a Partial Clean, then if the device doesn't reboot to Ready, download firmware via the preboot menu.
Before you try the solution
- 1. Copy the complete message exactly as shown, including any letters, spaces, or punctuation around 33.05.1X.
- 2. Find the printer's exact model number. The same-looking code can mean something different on another model family.
- 3. Let the current print, scan, or update operation stop before touching controls, paper paths, or covers.
Manufacturer-documented solution
Whitelisting error: a firmware file's digital signature failed validation, indicating tampering or a certificate problem. HP's fix: perform a Partial Clean, then if the device doesn't reboot to Ready, download firmware via the preboot menu.
Model scope: HP's SureStart troubleshooting documentation for your exact model
If the error is still there
- 1Return to the screen or job that produced the message and check whether the code has cleared.
- 2If 33.05.1X returns, do not repeat a risky procedure. Record when it appears and check the documentation for the exact model.
- 3If the documented action does not clear 33.05.1X, contact HP support or a qualified printer technician with the model number and complete message.
Other HP error codes
- 33.05.0XSureStart error range covering boot-code corruption (33.05.00-03, auto-recovered, no action needed) and firmware that failed cryptographic BIOS validation (33.05.04-07, requires downloading firmware via the preboot menu) plus invalid boot/downgrade attempts (33.05.08-09).
- 33.05.2XIntrusion Detection error range: 33.05.21 flags a potential memory-corruption intrusion (possible malware injection); 33.05.22-24 indicate the intrusion-detection process couldn't scan or failed to initialize. HP's fix: power cycle the device (selecting Continue from the preboot menu will not clear it).
- 0x610000f6Carriage Jam — the print carriage has stalled or is physically obstructed, most often by a paper jam or a cartridge that isn't seated correctly. Not a firmware/communication fault.
- 13.xxPaper jam; sub-code identifies location in the paper path
- 49Firmware / communication error; often clears on power cycle
- 59Internal motor error (drum motor startup/rotation fault). Variants indicate which motor/color: 59.05.60 (black), 59.06.60 (cyan), 59.07.60 (magenta), 59.08.60 (yellow); 59.C0 indicates a developer-disengagement motor rotation error.
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Manufacturer reference
The meaning and documented action above were taken from the manufacturer source below.
HP SureStart, Whitelisting & Intrusion Detection Security Features - Troubleshooting GuideVerified against manufacturer documentation, last checked 2026-08-13. PrintDiag has no printers and no technician, so nothing here is claimed as tested on hardware.