# C263A38 Time Sanity Check Failed

Alarm codes · `C263A38` · verification: source checked

The time since the last motor encoder read is too large. The code includes the time difference in microseconds as a float value.

## Specification

| Property | Value |
|---|---|
| Code | C263A38 |
| Meaning | The time difference in microseconds since the last motor encoder read is too great, so the time sanity check failed. |
| Remedy | Perform a complete reboot sequence, update the software, or contact your local Universal Robots service provider for assistance. |

## Connected

- Controllers: [Universal Robots e-Series Control Box](https://machineschema.com/controller/universal-robots-e-series-control-box.md)

## Sources

1. [C263 Motor Encoder](https://www.universal-robots.com/manuals/EN/HTML/SW5_26/Content/prod-err-codes/topics/CODE_263.html) (accessed 2026-10-26)

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Source page: https://machineschema.com/alarm/ur-c263a38  
JSON: https://machineschema.com/alarm/ur-c263a38.json  
License: CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Cite Machine Schema and the original sources.