391B4401

OKI B4401 391 Error: PC Communication Issue

The OKI B4401 391 error denotes a disruption in the handshake between the computer and the printing device. This prevents incoming print requests from being processed correctly. This is essentially a network or port-based timeout issue.

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Common causes

  • 1USB 3.0 port negotiation delay.
  • 2Changing IP addresses in dynamic DHCP environments.
  • 3Outdated print drivers conflicting with Windows 10/11.
  • 4Server-side print queue pile-up.

Solutions

Quick Diagnosis

If this error pops up, check if the printer is listed as 'offline' in Windows. A quick restart of the Print Spooler service resolves most of these 391-related hang-ups.

Step-by-Step Solution

  1. Restart print services: Restart the Print Spooler service through the Task Manager.
  2. Check cable/network: Replug the USB cable or ping the printer IP address if using Ethernet.
  3. Reinstall drivers: Delete the printer from your computer and perform a fresh driver installation.

Prevention and Maintenance

Always use direct USB connections, avoiding hubs. If in a network environment, use a reserved IP address to keep communication consistent.

When to Call a Technician

If communication persists to time out even after clean driver re-installs on multiple PCs, the main interface port on the printer may be failing.

Technical Specifications

  • Technology: Mono Laser
  • Connectivity: USB / Network
  • Performance: 40 ppm
  • Consumables: B440 series toner
  • Recommended Use: Enterprise Office
  • Official Drivers / Firmware

Steps to follow

  1. 1

    Restart print services

    Restart the Print Spooler service through the Task Manager.

  2. 2

    Check cable/network

    Replug the USB cable or ping the printer IP address if using Ethernet.

  3. 3

    Reinstall drivers

    Delete the printer from your computer and perform a fresh driver installation.

Frequently asked questions

It happens when the print driver times out while trying to send data to the printer.

No, it is typically a software-related communication timeout.

Use B440 series toners; third-party toners can interfere with printer reporting.

Only if you experience persistent communication errors or OS upgrades.

OKI B4401 391 Error: PC Communication Issue | Vimazdev