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

HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing 50.3 Error Fix: High Fuser Temperature Error

Fuser overheated — thermal protection engaged; let the printer cool completely; if persistent, the fuser unit needs replacement; this is a safety-critical error

Medium severity2 fixes available✨ Free fix available

Quick Answer

Error 50.3 on the HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing means: High Fuser Temperature Error. The top-ranked community fix is “Replace Fuser Unit and Test Thermistor” (hard difficulty, ~60 min, DIY cost: $150-$180). 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: $250-$350.

Other HP Models with Error 50.3

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

printer · 2 fixes

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

printer · 2 fixes

Other HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing Error Codes

10.10.00

Supply Memory Error

2 fixes

13.01

Paper Jam in Tray 1 (Multipurpose 100-Sheet Tray)

2 fixes

13.02

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

2 fixes

13.03

Paper Jam in Tray 3 (Optional 550-Sheet Tray)

2 fixes

13.05

Paper Jam in Fuser Area

2 fixes

13.06

Paper Jam in Output Bin

2 fixes

13.0A

Paper Jam in Duplex Unit

2 fixes

41.3

Unexpected Paper Size

2 fixes

People Also Ask About HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing Error 50.3

What does error code 50.3 mean on a HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing?

Error code 50.3 on the HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing means: High Fuser Temperature Error. Fuser overheated — thermal protection engaged; let the printer cool completely; if persistent, the fuser unit needs replacement; this is a safety-critical error

How do I fix error code 50.3 on my HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing?

The most successful fix is "Replace Fuser Unit and Test Thermistor" (hard difficulty, ~60 minutes). Estimated DIY cost: $150-$180. HomeMD has 2 community-ranked fixes for this error.

Is error code 50.3 on a HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing 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 LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing error 50.3 myself?

Yes — the top-ranked community fix ("Replace Fuser Unit and Test Thermistor") is rated hard difficulty and takes about 60 minutes. Tools needed: T10 Torx screwdriver, Multimeter.

How much does it cost to repair HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing error 50.3?

DIY cost: $150-$180. Professional repair typically costs $250-$350. Many homeowners save money by trying the top-ranked community fix first.

What other error codes does the HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing have?

The HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing has 8 other known error codes, including: 10.10.00 (Supply Memory Error), 13.01 (Paper Jam in Tray 1 (Multipurpose 100-Sheet Tray)), 13.02 (Paper Jam in Tray 2 (Main 250-Sheet Cassette)), 13.03 (Paper Jam in Tray 3 (Optional 550-Sheet Tray)), 13.05 (Paper Jam in Fuser Area), and 3 more.

Which other HP models have the 50.3 error?

Error code 50.3 also appears on 2 other HP models: HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm, LaserJet M209dw Mono Wireless Printer with 30 ppm Print Speed and 1200 x 1200 dpi Resolution. The fix may vary by model, so check each model's specific page for tailored repair steps.

What other error codes does the HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing have?

The HP LaserJet Pro M404dn Mono Laser Printer with 40 ppm, Ethernet, and Duplex Printing has 8 other known error codes:

10.10.00 — Supply Memory Error (2 fixes)
13.01 — Paper Jam in Tray 1 (Multipurpose 100-Sheet Tray) (2 fixes)
13.02 — Paper Jam in Tray 2 (Main 250-Sheet Cassette) (2 fixes)
13.03 — Paper Jam in Tray 3 (Optional 550-Sheet Tray) (2 fixes)
13.05 — Paper Jam in Fuser Area (2 fixes)
13.06 — Paper Jam in Output Bin (2 fixes)
13.0A — Paper Jam in Duplex Unit (2 fixes)
41.3 — Unexpected Paper Size (2 fixes)

Which other HP models have the 50.3 error?

Error code 50.3 also appears on 2 other HP models:

HP Color LaserJet Pro M255dw Wireless Color Laser Printer with Auto Duplex Printing and 22 ppm (printer) · 2 fixes
LaserJet M209dw Mono Wireless Printer with 30 ppm Print Speed and 1200 x 1200 dpi Resolution (printer) · 2 fixes

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