HP codes can differ by model. Choose the complete model and the exact displayed message before using a fix.
Documented HP entries
No source-read code is currently available; use the official model finder.
OfficeJet Pro 9125e cartridge message
HP lists a cartridge communication problem for its 9120 family. The 9125e guide separates safe checks from unverified repair steps.
DeskJet 2855e control-panel codes
HP documents E0 through E6 in one blinking-lights guide for the 2800 family. The 2855e E0–E6 comparison shows which problem each code means and when to use official support. Do not apply these meanings to an unrelated HP model.
Official sources
These links identify the source and its scope. Check the manufacturer page again before changing a printer setting or buying a part.
- HP — HP official driver/model support entry Checked 2026-11-01; official entry access blocked
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