HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm MECH-04 Error Fix: Print Quality Defects — Color Issues

Error code MECH-04 on the HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm means: Print Quality Defects — Color Issues. Faded colors, vertical streaks, spots, background toner, ghost images, or wrong colors in output — check all four toner levels; gently rock low cartridges side-to-side to redistribute remaining toner; run calibration; repeating marks at drum-circumference intervals indicate a worn imaging drum in one of the cartridges; the HP 206A cartridges have an integrated drum, so cartridge replacement resolves drum defects

The most successful fix is "Replace Worn Imaging Drum via Cartridge Replacement" (medium difficulty, ~30 minutes). Estimated DIY cost: $100-$120. 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 Worn Imaging Drum via Cartridge Replacement") is rated medium difficulty and takes about 30 minutes. Tools needed: .

DIY cost: $100-$120. Professional repair typically costs $150-$220. Many homeowners save money by trying the top-ranked community fix first.

The HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm has 8 other known error codes, including: 10.00.0X (Supply Memory Error), 13.01 (Paper Jam in Tray 1 (Priority Feed Slot)), 13.02 (Paper Jam in Tray 2 (Main 250-Sheet Tray)), 13.05 (Paper Jam in Fuser Area), 13.06 (Paper Jam in Output Bin Area), and 3 more.

Error code MECH-04 also appears on 7 other HP models: DeskJet 4155e Wireless All-in-One Printer with Mobile Printing and 4800 x 1200 dpi Color Resolution, ENVY 6055e All-in-One Wireless Printer with Auto 2-Sided Printing and Smart App Integration, HP OfficeJet Pro 9015e All-in-One Wireless Inkjet Printer with Auto 2-Sided Printing, 35-Page ADF, Fax, and 22 ppm, HP Smart Tank 7001 All-in-One Wireless Ink Tank Printer with Auto Duplex, ADF, and Refillable Ink System, LaserJet M209dw Mono Wireless Printer with 30 ppm Print Speed and 1200 x 1200 dpi Resolution, LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing, and 1 more. The fix may vary by model, so check each model's specific page for tailored repair steps.