Canon TS3700 E23 Error
On the Canon PIXMA TS3700 series, LCD code E23 corresponds to support code 3446: Wi-Fi and Wireless Direct are using conflicting IP address/subnet ranges.
Error meaning
Wi-Fi and Wireless Direct are using conflicting IP address/subnet ranges.
This meaning is tied to the reviewed family/platform and subsystem below; do not reuse the number by itself on a different printer family or protocol.
Applies to
Canon PIXMA TS3700-series platform
- TS3720
- TS3722
- TS3725
- TS3729
- TS3730
- TS3750i
- TS3751i
- TS3752i
Common formatting
These are formatting/lookup aliases for this reviewed condition, not separate error pages.
- E23
- E 23
- Canon E23
- TS3700 E23
- 3446
- Support Code 3446
What usually causes it
- The printer's Wi-Fi network and Wireless Direct network are configured in overlapping address ranges.
- A router/network change may have moved the normal Wi-Fi LAN into the same range used by Wireless Direct.
- The condition is a network-addressing conflict, not an ink, paper, or printhead fault.
What to try
Confirm the displayed code
Use E23/3446 only for the reviewed TS3700-series models.
Check which network modes are enabled
Determine whether the printer is using normal Wi-Fi, Wireless Direct, or both.
Separate the network ranges
Use Canon's supported network settings so Wi-Fi and Wireless Direct do not use conflicting IP/subnet ranges. If you do not manage IP addressing, ask the network administrator for the correct configuration.
Reconnect and retry the original print
After the network ranges are corrected, reconnect the device/computer and test the same job.
After each corrective action
Retry the same operation that produced E23. If it now works, stop there rather than changing unrelated printer, network, or service settings.
If the code returns
If E23/3446 returns after the ranges are separated, review the printer's saved LAN settings and router addressing rather than resetting unrelated printer functions.
When service may be needed
Do not randomly assign static IP addresses on a managed network. Use the router/network administrator's addressing plan.
Continue with guided troubleshooting
If the printer still is not working after the reviewed checks, carry this verified error context into the guided troubleshooter.
Related information
Verified source
Official Canon TS3700-series LCD/support-code documentation; E23 maps to support code 3446 in the reviewed family.