Canon Printer Error E70 — What It Means & How to Fix It

What Does This Error Mean?

Error E70 on a Canon printer is a network setup or communication error. The printer cannot connect to your Wi-Fi network or is experiencing a network communication failure. This error commonly appears after a router change, a network password update, or a printer reset.

Affected Models

Canon PIXMA MG3600 Series
Canon PIXMA MG5700 Series
Canon PIXMA TS5100 Series
Canon PIXMA TS6300 Series
Canon PIXMA TR8500 Series

Common Causes

The Wi-Fi network password was changed and the printer still has the old password saved
The router was replaced or reset, giving it a new network name (SSID) or settings
The printer is too far from the Wi-Fi router and is receiving a weak signal
The router is set to use a 5GHz-only network and the printer only supports 2.4GHz
The printer's wireless settings became corrupted after a power interruption

How to Fix It

On the printer's control panel, go to Settings > Wireless LAN Settings and select 'Setup Wireless LAN'. Follow the on-screen setup wizard to reconnect to your Wi-Fi.

Make sure you have your Wi-Fi network name and password ready before starting the setup.
Make sure the printer is within good range of the router — ideally in the same room or the next room. Move it closer temporarily to rule out signal strength as the cause.

Walls, appliances, and other wireless devices can interfere with the signal. A printer that is too far from the router will drop connections and show network errors.
Check your router settings. Make sure it is broadcasting on 2.4GHz — most Canon PIXMA printers do not support 5GHz networks.

If your router broadcasts both 2.4GHz and 5GHz with the same network name, try separating them and connecting the printer to the 2.4GHz network specifically.
Reset the printer's network settings to default. Go to the printer's menu and find 'Reset LAN Settings' or 'Initialize Network Settings'. Then redo the wireless setup.

This clears any corrupted network configuration that could be preventing the printer from connecting.
If wireless setup continues to fail, try using the WPS button method: press the WPS button on your router, then start WPS setup from the printer's menu within 2 minutes.

WPS (Wi-Fi Protected Setup) connects the printer to the router without needing to enter the password manually.

When to Call a Professional

If the printer's Wi-Fi hardware has failed, it will need repair by a Canon service technician. However, most E70 errors are software and settings issues that you can resolve yourself. Only consider professional service if all software and network fixes have been exhausted.

Frequently Asked Questions

Why does my Canon printer keep losing Wi-Fi connection?

Frequent disconnections are usually caused by a weak signal, router firmware issues, or the printer being put into a deep sleep mode. Try moving the printer closer to the router and checking for router firmware updates. Also check if the printer has a 'wireless timeout' setting in its menu and increase it or disable it.

Does my Canon printer support 5GHz Wi-Fi?

Most Canon PIXMA consumer printers only support 2.4GHz Wi-Fi — not 5GHz. Check your specific model's specifications on Canon's website to confirm. If your router only broadcasts 5GHz, you will need to enable a 2.4GHz band or use a USB connection instead.

I changed my Wi-Fi router — why did E70 appear?

When you replace a router, the new router usually has a different network name and password. Your printer still has the old network name and password saved, so it cannot connect. You need to go through the wireless setup again and enter the new router's details.