Xerox error codes, explained
WorkCentre, VersaLink and AltaLink MFPs. Codes below: Three-part codes (016-720, 010-397…). Each guide covers what the code means, what you can safely try yourself, when to stop and call a technician, and what the repair typically costs.
Xerox 016-720 — PCL/PDL processing error
The machine couldn't process the page description language data in a job — most often a PCL emulation error from a corrupt document, driver mismatch, or unsupported feature. Not a hardware fault. (PostScript-specific errors use their own code, 016-749.)
Xerox 010-397 — Fuser failure
The fuser unit failed a temperature/operation check. As with all fuser-class faults, the machine locks out for safety.
Xerox 016-781 — Scan-to-email/SMTP connection failure
The machine couldn't connect to the configured mail server. Nearly always a network/settings issue: changed SMTP credentials, a mail provider now requiring app passwords/OAuth, or DNS problems.
Xerox 077-900 — Paper remaining in path
A path sensor still detects paper after a jam was cleared — a missed fragment or a stuck sensor flag.
Xerox 116-xxx — System/software error family
A family of controller and software faults (e.g., 116-324 'Exception Failure' — a fatal software exception, often triggered by a corrupt print job). Most respond to a full power cycle; recurring instances usually need a firmware/software reload. One caveat: the 116-330/331/336/337/339 subcodes are hard-disk file-system failures, which are a service matter rather than a software hiccup.