# Communication Failed

**URL:** <https://forum.universal-robots.com/t/communication-failed/24064>\
**Category:** URScript\
**Created:** [September 26, 2022, 4:05pm UTC](https://forum.universal-robots.com/t/communication-failed/24064 "2022-09-26T16:05:29Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![anon3336659](https://avatars.discourse-cdn.com/v4/letter/a/5e9695/32.png) [@anon3336659](https://forum.universal-robots.com/u/anon3336659)\
**Post date:** [September 26, 2022, 4:05pm UTC](https://forum.universal-robots.com/t/communication-failed/24064/1 "2022-09-26T16:05:29Z")

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C262A18 Communication Failed,  
What is this?

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**Author:** ![prichlin](https://avatars.discourse-cdn.com/v4/letter/p/b3f665/32.png) [@prichlin](https://forum.universal-robots.com/u/prichlin)\
**Post date:** [September 27, 2022, 5:45pm UTC](https://forum.universal-robots.com/t/communication-failed/24064/2 "2022-09-27T17:45:51Z")

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Hello @anon3336659,  
The C262A18 error indicates a communications issue between the joints inside the arm. From the UR Service Manual:

 ![image](https://us1.discourse-cdn.com/flex020/uploads/universal_robots/original/2X/f/fba10f621600a18648632a926c92f7bcda4d2413.png)

If you haven’t already, it may help to open a support case in myUR so they can assist you with diagnosing the issue.  
[https://myur.universal-robots.com/#/](https://myur.universal-robots.com/#/)