Canon · Ink absorber / service
Canon PIXMA Support Code 5B00
Canon's TS3700-series documentation states that 5B00 means the ink absorber is full and the printer cannot print until the absorber is replaced.
Start hereOn models where Canon defines 5B00 as a full ink absorber, this is a repair condition. Do not use a counter-reset procedure as a substitute for replacing a saturated absorber.
What to check
Step 1
Confirm the exact model and 5B00 code.
Canon support-code behavior can vary across older and newer product families.
Step 2
Do not keep forcing print jobs.
On the cited TS3700 series, Canon says the printer cannot print when the absorber is full.
Step 3
Arrange absorber service/replacement.
Canon directs users to contact Canon for repair.
Step 4
Avoid reset-only fixes.
Clearing a maintenance counter without addressing the physical absorber can leave the underlying ink-waste condition unresolved.
Verified sources
Printer Triage is an independent troubleshooting reference and is not affiliated with Canon. Use the exact model's manufacturer documentation when instructions differ.