Brother Error Print Unable E2 — What It Means & How to Fix It
Updated August 2026 · Independent PrinterCare USA support guide
The Brother Print Unable E2 error is frustrating because it means your laser printer has detected a fault on its main printed circuit board, and this error doesn't go away with simple troubleshooting. This is one of the most serious errors Brother printers display, and it usually appears on HL, MFC, and DCP series laser models when the main logic board stops communicating properly with the printer's other components.
The good news is that not every E2 error requires an expensive board replacement right away. Temporary electrical glitches, loose connectors inside the printer, or corrupted firmware can sometimes trigger this error, and a few targeted steps can help you determine whether this is a quick fix or a genuine hardware failure that needs professional service.
How to fix it — step by step
- Perform a complete power cycle. Turn off your Brother printer using the power button, then unplug the power cable from the back of the unit. Wait for a full two minutes to allow any residual charge to drain from the main PCB. Plug the printer back in, power it on, and wait for the startup sequence to complete before attempting a test print.
- Check all internal cable connections. Open the printer's access panel or toner cover and visually inspect all ribbon cables and connectors between the main PCB and other components like the laser module, drum unit connector, and fuser assembly. Gently reseat each connector by pushing it firmly into place, ensuring no wires are pinched or bent. Look for any visible burn marks or corrosion on the circuit board itself.
- Remove and reinstall the toner cartridge and drum unit. Take out the toner cartridge by opening the front access panel, then remove the drum unit according to your printer's manual. Wait thirty seconds, then reinstall both components in reverse order, making sure they click firmly into place. This can sometimes resolve communication errors between the cartridge and the main board.
- Clear the printer's memory and reset to factory defaults. Access the printer's menu using the control panel buttons, navigate to Settings or Setup, and look for a Factory Reset or Initialize option. Select this option to clear any corrupted data that might be causing the E2 error. Allow the printer to complete the reset process, which may take one to two minutes, then power it off and on again.
- Update or reinstall the printer firmware. Visit the official Brother support website from a computer and search for your specific printer model number. Download the latest firmware file to your computer, then follow Brother's firmware update instructions, which typically involve placing the file on a USB drive or sending it directly over your network connection. This process can resolve software-level issues that trigger false E2 errors.
- Test the printer with a USB connection only. If your printer is on a network, disconnect the Ethernet cable and connect it directly to a Windows 11 or macOS computer using a USB cable instead. Remove all other printing jobs from the queue by going to Settings > Devices > Printers and Scanners on Windows 11 and deleting pending jobs. Send a small test print job directly from Notepad or a web browser to see if the network connection was contributing to the error.
- Use remote diagnostics or contact Brother support. If the error persists after all previous steps, the main PCB may be genuinely faulty and require professional diagnosis. Many authorized Brother service centers offer remote diagnostic services for around $49 that can pinpoint exactly which component has failed. This diagnostic fee often gets credited toward the repair cost if you proceed with service through that center.
- Order a replacement main PCB or arrange pickup service. If diagnostics confirm the main PCB is faulty, you can purchase a replacement circuit board through authorized Brother dealers or have a certified technician install one at your location. Main PCB replacements typically cost between $150 and $300 depending on your printer model, plus labor if you use a service technician. Always compare the repair cost against the current price of a new printer in your model class before committing to the repair.
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Frequently asked questions
Does Error E2 always mean the main board is broken and needs replacement?
Not necessarily. While E2 does indicate a main PCB fault, it can sometimes be triggered by loose internal connectors, corrupted firmware, or temporary electrical issues. A complete power cycle and firmware update should be your first steps before assuming the board itself is damaged. Only if the error persists after these basic steps should you consider that the PCB itself has failed.
Can I still print anything while Error E2 is showing on the display?
No, the Brother printer will not print any jobs while the E2 error is active because the main circuit board has detected a fault it considers unsafe to continue operation. The printer is protecting itself from potentially damaging the hardware further or producing poor quality output. You must resolve the error or have the board serviced before printing is possible again.
What is the difference between a $49 remote diagnostic and actually replacing the board?
A remote diagnostic is a service where a Brother-authorized technician runs tests on your printer over your network or phone connection to identify exactly which component has failed, whether it is truly the main PCB or another board like the network interface card. Once the diagnostic is complete, you then decide whether to pay for the actual repair. A main PCB replacement involves shipping your printer to a service center or having a technician visit to physically install the new board, which costs significantly more.
Should I try to replace the main PCB myself if I find a tutorial online?
Main PCB replacement requires opening the printer extensively and involves handling sensitive electronic components, ribbon cables, and high-voltage parts from the fuser unit that can cause injury even after the printer is powered off. Unless you have professional electronics repair experience, this is not a safe or recommended DIY repair. Using an authorized service technician ensures the work is done safely, correctly, and often comes with a warranty on the replacement part.