Thanks for reaching out to the Google Nest Community.
Avirudy2010, what type of Nest thermostat are you getting this code on? When did this start? Also, have you tried some troubleshooting steps already/ If not yet, please go through the suggestions on this link: https://bit.ly/3uxhlpw
Danial, could you tell us more how can we help?
I haven't heard from you in a while so I'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the community.