E8
HP · HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System
The printhead is not recognized, is improperly installed, or has failed — unlike cartridge-based HP printers where E8 means incompatible cartridge, Smart Tank printers use a permanent printhead that receives ink from the refillable tanks; remove the printhead assembly, clean the electrical contacts on the printhead and inside the carriage with a lint-free cloth dampened with distilled water, allow to dry, and reinstall; if the error persists, the printhead needs replacement (HP printhead replacement kits are available separately from ink)
Error E8 on the HP HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System means: Printhead Problem. The top-ranked community fix is “Replace Defective Ink Cartridge with Genuine HP Cartridge” (medium difficulty, ~20 min, DIY cost: $15-$30). 2 community-ranked fixes available below.
Published February 2026 · 2 fixes · printer
Content is based on manufacturer service documentation, community repair experience, and OEM technical bulletins. Always verify with your owner's manual.Learn about our editorial standards.
While many printer repairs can be done safely at home, consider hiring a qualified technician if:
Average professional repair cost for this issue: $90-$140.
printer · 2 fixes
printer · 2 fixes
printer · 2 fixes
printer · 2 fixes
The HP HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System has 8 other known error codes:
Error code E8 also appears on 4 other HP models:
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