Epson Epson EcoTank ET-2850 All-in-One Wireless Color Supertank Printer with Scanner and Copier TANK-CAP-OPEN Error Fix: Ink Tank Cap Not Closed

Error code TANK-CAP-OPEN on the Epson Epson EcoTank ET-2850 All-in-One Wireless Color Supertank Printer with Scanner and Copier means: Ink Tank Cap Not Closed. One or more ink tank caps are open or not seated properly — the printer will not operate with open tank caps due to risk of ink spills and air ingestion into the ink system; check all ink tank caps and press each one firmly until it clicks closed; on some models, the tank unit cover must also be closed

The most successful fix is "Replace Faulty Ink Tank Cap or Ink Tank Assembly" (medium difficulty, ~40 minutes). Estimated DIY cost: $20-$40. HomeMD has 2 community-ranked fixes for this error.

This error is rated medium severity. It should be addressed soon, but your appliance may still function in a limited capacity.

Yes — the top-ranked community fix ("Replace Faulty Ink Tank Cap or Ink Tank Assembly") is rated medium difficulty and takes about 40 minutes. Tools needed: Small Phillips screwdriver.

DIY cost: $20-$40. Professional repair typically costs $130-$180. Many homeowners save money by trying the top-ranked community fix first.

The Epson Epson EcoTank ET-2850 All-in-One Wireless Color Supertank Printer with Scanner and Copier has 8 other known error codes, including: 0x69 (Print Head Overheated), 0x97 (Internal Hardware Error (Mainboard)), 0xEA (Paper Feed Error (Hardware)), 0xF1 (Ink System Error (Fatal)), ADF-JAM (Automatic Document Feeder Paper Jam), and 3 more.

Error code TANK-CAP-OPEN also appears on 2 other Epson models: Epson EcoTank ET-2800 All-in-One Wireless Color Cartridge-Free Supertank Printer with Scan and Copy, Epson EcoTank ET-4850 All-in-One Cartridge-Free Supertank Printer with Scanner, Copier, Fax, ADF, and Ethernet. The fix may vary by model, so check each model's specific page for tailored repair steps.