What's actually going on
091-311 sits in the xerographics chain. The first three digits identify the subsystem and the digits after the dash identify the specific fault within it.
The charge device that prepares the drum surface is failing or contaminated, which shows as print-quality defects before the code appears.
This family is closely tied to drum cartridge life and to running well past a supply warning.
What to do in the next 48 hours
- 1Write down the full code — 091-311 — before clearing anything, along with the machine's serial number and current meter reading.
- 2Power down, wait a minute and restart.
- 3Check the machine's supplies screen for a drum or charge unit at or past end of life, and replace it if you hold a spare.
- 4Print a test page and keep it — the defect pattern tells the technician which unit is failing.
- 5If the identical code returns within a day of clearing it, stop clearing and log a service call. A code that comes back is a component telling you it is finished.
The honest tradeoffs
- Clearing this repeatedly to get through a deadline is understandable, but it is a protective stop — printing through it risks turning a single part into several.
- Do not run production through a 091 fault. Book service with the code and take a sample print for the technician.
Your next step
- Need help fixing 091-311? Book a technicianSend the code and we route the right parts to the first visit instead of a diagnosis trip.
- Is this machine worth another repair?Free calculator. Age, volume and repair spend against the cost of replacing.
- How our service actually worksResponse times, what a visit covers and who turns up.
Questions people ask next
- What causes Xerox 091 error codes?
- 091 codes come from the xerographic charge system — the corotron or drum cartridge. They usually follow visible print-quality decline and mean a consumable or charge assembly has reached the end of its usable life.
- Do I need a technician for Xerox error 091-311?
- Do not run production through a 091 fault. Book service with the code and take a sample print for the technician. Send us the code, the model and the serial number and we will tell you honestly whether it is a five-minute fix you can do yourself.
More on a machine that keeps breaking
- My copier keeps jamming and I've stopped trusting it
- My service company doesn't show up
- My Xerox is showing an error code. What does it mean?
- Should I repair this copier or replace it?
- How much should copier service actually cost?
- Why does my copier put lines or streaks on every page?
- My copier jams every single day
- Xerox error 016-799: what it means and how to fix it
- Xerox error 016-798: what it means and how to fix it
- Xerox error 016-500: what it means and how to fix it
- Xerox error 010-330: what it means and how to fix it
- Xerox error 042-325: what it means and how to fix it
- Xerox error 077-900: what it means and how to fix it
- Xerox error 093-912: what it means and how to fix it
- Xerox error 005-121: what it means and how to fix it
- Xerox error 024-747: what it means and how to fix it
- My copier lease is ending and I don't know what to do
- My lease auto-renewed and I never agreed to it
- I have to return a copier and I don't know the rules