Can you keep using it?
Can you keep using it?
Contact customer support if any of these apply
- !1688 remains after installing the correct new cartridge.
- !Multiple cartridge positions start failing recognition at the same time.
What to check first
Step-by-step checks
- 1
Consumable check
Replace the indicated ink cartridge with the correct Canon supply.
Start with the official recovery step before moving on to parts or deeper servicing.
- 2
Consumable check
Make sure the new cartridge is seated correctly and the cover is fully closed.
- 3
Safe first step
Retry only after the printer returns to a ready state.
Background
What this message usually means
Canon uses support code 1688 when an installed ink cartridge has effectively run out and the MB2700 family cannot continue normal printing. It is a stop-state supply message rather than a low-ink reminder.
Diagnosis
Likely causes
An installed ink cartridge has run out.
The cartridge was already near empty and crossed the stop threshold.
A supply recognition check has confirmed that printing should stop.
Service
When service or replacement is more likely
- -This is more serious than a simple low-ink warning because Canon expects a supply change.
See also
Related codes in this family
Explore more
More Canon printer families
Keep browsing
Where to go next
Source notes
Canon's MB2700-series support-code list includes 1688 in the stop-state ink supply group.
Built around Canon MB2700-series support-code guidance. Exact wording can vary a little by region and model variant.
Printer error codes can vary a little by firmware, region, and exact model variant. Use this guide as a family-level starting point and stop if the next step would require disassembly or service-mode changes.
Known family variants: MB2710, MB2720, MB2740, MB2750, MB2760, MB2790
Last reviewed: 2026-04-12
Reference: Open reference