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Google Nest thermostat code TD001, TD003, TH003 and the other TD and TH codes: meaning and exact next steps

TD001, TD003, TH003 and the other TD and TH codes means The thermostat has trouble connecting: TD001, TD005 to TD008, TD010 to TD012, TD014 to TD017 and TD019 to TD022 mean it is having problems connecting to Wi-Fi or the app (Google's article is for a thermostat that is offline); TD003, TD004, TD009, TD018, TD023, TD024, TD027, TD028 and TD030 occur while adding the thermostat to the app; TH codes (TH003, TH004, TH008 to TH011, TH013 to TH019 and TH026) cover Wi-Fi and Thread network setup problems. This answer applies only to Google Nest Learning Thermostats (1st through 4th generation), the Nest Thermostat E and the Nest Thermostat that show a lettered help code on the display or in the Nest or Google Home app. Google prints one meaning for the aliases it groups together, and this page keeps that grouping. Codes shown by other brands of thermostat are on their own pages.

On the covered Google Nest thermostat, TD001, TD003, TH003 and the other TD and TH codes means the thermostat has trouble connecting: TD001, TD005 to TD008, TD010 to TD012, TD014 to TD017 and TD019 to TD022 mean it is having problems connecting to Wi-Fi or the app (Google's article is for a thermostat that is offline); TD003, TD004, TD009, TD018, TD023, TD024, TD027, TD028 and TD030 occur while adding the thermostat to the app; TH codes (TH003, TH004, TH008 to TH011, TH013 to TH019 and TH026) cover Wi-Fi and Thread network setup problems. First, restart your phone, restart your router, and check that Bluetooth is on and that the thermostat is awake.

Part of Google Nest thermostat error codes

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0 of 2 completed

  1. What to do first

    Reversible

    Restart your phone, restart your router, and check that Bluetooth is on and that the thermostat is awake.

  2. Correct only the documented fault domain

    Reversible

    Google's steps for the TH codes (setup): restart your phone and other Google Nest devices, turn Bluetooth off and on, put the phone in airplane mode and turn Bluetooth and Wi-Fi back on, move other Nest devices closer to the thermostat, restart the modem and router, check IPv6 is on at the modem for TH008, try a different phone or a mobile hotspot for TH013 and TH026, and as a last step factory reset the other Google Nest devices and add them back before adding the thermostat.

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01
Google Nest Help Troubleshoot Nest thermostat help codes

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Common questions about “Google Nest thermostat code TD001, TD003, TH003 and the other TD and TH codes”

What does TD001, TD003, TH003 and the other TD and TH codes mean on a Google Nest thermostat?+

The thermostat has trouble connecting: TD001, TD005 to TD008, TD010 to TD012, TD014 to TD017 and TD019 to TD022 mean it is having problems connecting to Wi-Fi or the app (Google's article is for a thermostat that is offline); TD003, TD004, TD009, TD018, TD023, TD024, TD027, TD028 and TD030 occur while adding the thermostat to the app; TH codes (TH003, TH004, TH008 to TH011, TH013 to TH019 and TH026) cover Wi-Fi and Thread network setup problems.

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