What's actually going on
016-500 sits in the network and controller chain. The first three digits identify the subsystem and the digits after the dash identify the specific fault within it.
An interrupted firmware update, a dropped network connection during upgrade, or a controller that lost contact with the print engine.
It also appears after a power cut during an automatic overnight update.
What to do in the next 48 hours
- 1Write down the full code — 016-500 — before clearing anything, along with the machine's serial number and current meter reading.
- 2Power down from the user interface, wait sixty seconds, and restart. Do not pull the plug during the shutdown sequence.
- 3Confirm the network cable is seated and the link light is active.
- 4If the machine restarts cleanly and prints, note the date — a repeat within a week is a real fault.
- 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
- Working around this by printing from another machine is fine short term, but the underlying cause does not resolve itself and usually spreads to other users.
- If the code returns on restart, the firmware load is damaged and needs to be reapplied by a technician.
Your next step
- Need help fixing 016-500? 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
- Is Xerox error 016-500 serious?
- Usually not on the first occurrence — it normally follows an interrupted firmware update and clears with a proper power-down and restart. If it returns after a clean restart, the firmware image is damaged and needs reloading on site.
- Do I need a technician for Xerox error 016-500?
- If the code returns on restart, the firmware load is damaged and needs to be reapplied by a 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.
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