E3 Troubleshooting

Cartridge / carriage error (E3) on the HP 304 Schwarz

Source: HP Support — printer error codes Confidence: 80% Verified Aug 9, 2026

The printer reports a cartridge or carriage error, often after a cartridge change.

How to fix Cartridge / carriage error (E3)

Reinstall the cartridge

Remove and reinstall the cartridge, ensuring it is pushed firmly into the carriage until it clicks into place.

Source: HP Support — printer error codes Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 5 min

Parts needed: HP 304 Schwarz Toner Cartridge, HP 304 Schwarz Ink Cartridge

Clean the contacts

Clean the cartridge and carriage contacts with a dry cloth and retry.

Source: HP Support — printer error codes Confidence: 80% Verified Aug 9, 2026
Difficulty: ★ Est. 3 min

Replacement parts for the HP 304 Schwarz

HP OfficeJet Pro 9015 Maintenance Kit HP DeskJet 2755e Maintenance Kit HP LaserJet Pro M404 Maintenance Kit HP 953 Maintenance Kit HP Smart Tank 5105 3-in-1 Multifunktionsdrucker Maintenance Kit HP 963 Maintenance Kit HP 305XL Maintenance Kit HP 304 Schwarz Toner Cartridge HP 304 Schwarz Drum Unit HP 304 Schwarz Ink Cartridge HP 304 Schwarz Fuser Assembly HP 304 Schwarz Paper Tray HP 304 Schwarz Maintenance Kit HP 62 Maintenance Kit HP 301 Schwarz Maintenance Kit HP 302 Original Druckerpatronen 2er-Pack Maintenance Kit HP 302 Maintenance Kit HP 305 Maintenance Kit HP 903 Maintenance Kit HP 301 Maintenance Kit HP 142A Maintenance Kit HP 912 Maintenance Kit HP 304 Maintenance Kit HP 304 Farbe Maintenance Kit HP LaserJet M110w Laserdrucker Maintenance Kit HP 953XL Maintenance Kit HP OfficeJet Pro 8122e Multifunktionsdrucker Maintenance Kit HP 303 Maintenance Kit HP 305 Original Negro 1 pieza Maintenance Kit HP 903XL Maintenance Kit

← All HP 304 Schwarz error codes

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