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51.XX

HP · HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm

HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm 51.XX Error Fix: Laser Beam Detect Error

The laser beam is not being detected — laser unit or optics may be failing; power cycle; if persistent, requires professional service of the laser scanning assembly

Medium severity2 fixes available

Quick Answer

Error 51.XX on the HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm means: Laser Beam Detect Error. The top-ranked community fix is “Replace Laser Scanner Assembly” (hard difficulty, ~90 min, DIY cost: $200-$250). 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.

When to Call a Professional

While many printer repairs can be done safely at home, consider hiring a qualified technician if:

The repair involves electrical wiring, gas lines, or refrigerant
You've tried the top-ranked fix and the error persists
You smell gas, see sparking, or notice water leaking
The repair requires specialized tools you don't have
Your appliance is still under manufacturer warranty

Average professional repair cost for this issue: $300-$400.

Other HP Models with Error 51.XX

LaserJet M209dw Mono Wireless Printer with 30 ppm Print Speed and 1200 x 1200 dpi Resolution

printer · 2 fixes

LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing

printer · 2 fixes

Other HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm Error Codes

10.00.0X

Supply Memory Error

2 fixes

13.01

Paper Jam in Tray 1 (Priority Feed Slot)

2 fixes

13.02

Paper Jam in Tray 2 (Main 250-Sheet Tray)

2 fixes

13.05

Paper Jam in Fuser Area

2 fixes

13.06

Paper Jam in Output Bin Area

2 fixes

13.0A

Paper Jam in Duplex Unit

2 fixes

41.3

Unexpected Paper Size

2 fixes

49.XX.XX

Critical Firmware Error

2 fixes

People Also Ask About HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm Error 51.XX

What does error code 51.XX mean on a HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm?

Error code 51.XX on the HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm means: Laser Beam Detect Error. The laser beam is not being detected — laser unit or optics may be failing; power cycle; if persistent, requires professional service of the laser scanning assembly

How do I fix error code 51.XX on my HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm?

The most successful fix is "Replace Laser Scanner Assembly" (hard difficulty, ~90 minutes). Estimated DIY cost: $200-$250. HomeMD has 2 community-ranked fixes for this error.

Is error code 51.XX on a HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm serious?

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

Can I fix HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm error 51.XX myself?

Yes — the top-ranked community fix ("Replace Laser Scanner Assembly") is rated hard difficulty and takes about 90 minutes. Tools needed: T15 Torx screwdriver, Anti-static wrist strap.

How much does it cost to repair HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm error 51.XX?

DIY cost: $200-$250. Professional repair typically costs $300-$400. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm have?

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.

Which other HP models have the 51.XX error?

Error code 51.XX also appears on 2 other HP models: 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. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm have?

The HP HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm has 8 other known error codes:

10.00.0X — Supply Memory Error (2 fixes)
13.01 — Paper Jam in Tray 1 (Priority Feed Slot) (2 fixes)
13.02 — Paper Jam in Tray 2 (Main 250-Sheet Tray) (2 fixes)
13.05 — Paper Jam in Fuser Area (2 fixes)
13.06 — Paper Jam in Output Bin Area (2 fixes)
13.0A — Paper Jam in Duplex Unit (2 fixes)
41.3 — Unexpected Paper Size (2 fixes)
49.XX.XX — Critical Firmware Error (2 fixes)

Which other HP models have the 51.XX error?

Error code 51.XX also appears on 2 other HP models:

LaserJet M209dw Mono Wireless Printer with 30 ppm Print Speed and 1200 x 1200 dpi Resolution (printer) · 2 fixes
LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing (printer) · 2 fixes

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