Tesla Powerwall 2/3 Error Codes

Complete diagnostic guide for Tesla Powerwall 2 and Powerwall 3 energy storage systems.

LED Status Indicators

Visual status indicators displayed by the Powerwall LED system for operational states and diagnostics.

Code	Meaning	Possible Causes	Solutions
LED Blinking Red	Inverter error detected - system requires attention	•Inverter fault •Communication error •Hardware malfunction •System fault •Safety system activation	Check Tesla app for specific error details Review system logs in Tesla app Verify all connections are secure Check Powerwall temperature and ventilation Reset circuit breaker if safe to do so Contact Tesla support or certified installer
LED Off	Powerwall is turned off or in standby mode	•Powerwall switched off •Standby mode •Power loss •Circuit breaker tripped •Side switch turned off	Check Powerwall side switch is in ON position Verify circuit breaker status Check power supply to Powerwall Verify Powerwall is properly connected Check Tesla app for system status Contact Tesla support if issue persists
LED Solid Green	Powerwall operating normally	•Normal operation •System functioning correctly	No action required Monitor system performance in Tesla app Check battery charge status
LED Blinking Green	Powerwall is charging or discharging	•Active charge/discharge operation •Normal battery operation	Monitor charge/discharge status in Tesla app Check battery state of charge Verify operation is expected based on system settings
LED Solid Yellow	Powerwall in calibration mode or maintenance	•Calibration in progress •System maintenance •Firmware update •Initial setup	Wait for calibration to complete (can take up to 24 hours) Do not interrupt the process Monitor progress in Tesla app No action required during calibration

System Alerts and Notifications

System alerts and notifications displayed in the Tesla app for Powerwall status and issues.

Code	Meaning	Possible Causes	Solutions
Circuit Breaker Open	Powerwall is disconnected from the grid and cannot operate	•Circuit breaker tripped •Manual disconnect •Electrical fault •Overcurrent condition •Ground fault	Check circuit breaker connecting Powerwall to home Verify breaker is in ON position Do not reset breaker if electrical fault is suspected Check for obvious electrical issues Contact qualified electrician before resetting Verify no short circuits or ground faults
Calibration Running	Powerwall is being calibrated for optimal performance	•Initial setup •System reset •Firmware update •Maintenance calibration	Wait for calibration to complete (up to 24 hours) Do not interrupt the calibration process Monitor progress in Tesla app No action required System will resume normal operation after calibration
Side Switch OFF	The side switch on the Powerwall is turned off	•Manual switch turned off •Accidental switch activation •Maintenance mode	Locate side switch on Powerwall Turn side switch to ON position Verify Powerwall LED indicates normal operation Check Tesla app for system status
Grid Disconnected	Powerwall is not connected to the utility grid	•Grid outage •Manual grid disconnect •Circuit breaker tripped •Grid connection fault	Check utility grid status Verify grid connection Check circuit breakers Wait for grid to reconnect Contact utility company if grid is down System will automatically reconnect when grid is available
Battery Not Charging	Powerwall is not charging from solar or grid	•Charging disabled in settings •Battery at full capacity •Temperature protection •Grid connection issue •Solar production insufficient	Check battery charge settings in Tesla app Verify battery state of charge Check battery temperature Verify grid connection Check solar production levels Review time-based control settings
Battery Not Discharging	Powerwall is not discharging to power home	•Discharge disabled in settings •Battery at minimum charge •Grid available (backup mode) •Load demand insufficient •System configuration	Check battery discharge settings in Tesla app Verify battery state of charge Check if system is in backup mode Verify load demand Review system operating mode Check time-based control settings

Communication and Monitoring Errors

Error codes related to system communication, monitoring, and Tesla app connectivity.

Code	Meaning	Possible Causes	Solutions
COMM-001	Powerwall communication failure with Gateway	•Communication cable disconnected •Gateway communication failure •Network issue •Firmware mismatch •WiFi/Ethernet connection lost	Check communication cable connections Verify Gateway is powered and online Check network connectivity Restart Gateway if needed Check WiFi/Ethernet connection Verify firmware versions are compatible Contact Tesla support if issue persists
COMM-002	Tesla app cannot connect to Powerwall	•Internet connection lost •Gateway offline •Tesla servers unreachable •App configuration issue •Account access problem	Check internet connection Verify Gateway is online Restart Gateway Check Tesla app connection status Verify account access Restart Tesla app Contact Tesla support if issue persists
COMM-003	Gateway offline	•Power loss to Gateway •Network connection lost •Gateway hardware failure •Firmware issue	Check Gateway power supply Verify circuit breaker for Gateway Check network connection Restart Gateway Check Gateway LED indicators Contact Tesla support if Gateway remains offline
DATA-001	Data logging or monitoring error	•Storage full •Data logging module failure •Firmware issue •Memory error	Check available storage Clear old data if possible Update firmware Reset data logging module Contact Tesla support for advanced troubleshooting

Battery Operation Errors

Error codes related to battery charging, discharging, capacity, and performance issues.

Code	Meaning	Possible Causes	Solutions
BATT-001	Battery capacity degradation detected	•Normal aging •Excessive cycling •Temperature extremes •Deep discharge cycles •Manufacturing defect	Monitor capacity trends in Tesla app Check battery age and usage patterns Review operating temperature history Contact Tesla support for capacity analysis Consider warranty claim if capacity is below expected
BATT-002	Battery charge/discharge rate reduced	•Temperature protection •Battery health management •System optimization •Safety limits activated	Check battery temperature Verify ventilation is adequate Review battery health status in Tesla app Check for any system warnings Allow system to optimize automatically
BATT-003	Battery module communication error	•Module communication failure •Module disconnected •Internal communication bus issue •Module firmware issue	Check battery module connections Verify module communication status Restart Powerwall system Contact Tesla support if issue persists Do not attempt to repair modules yourself
BATT-004	Battery thermal management error	•Cooling system failure •Temperature sensor fault •Thermal management system issue	Check battery temperature Verify ventilation is adequate Check cooling system operation Contact Tesla support immediately Do not operate if temperature is abnormal

Temperature and Environmental Errors

Error codes related to temperature management, ventilation, and environmental conditions.

Code	Meaning	Possible Causes	Solutions
TEMP-001	Powerwall temperature too high	•Ambient temperature exceeds limits •Inadequate ventilation •Installation location too hot •Cooling system issue	Check ambient temperature (operating range: -20°C to 50°C) Ensure adequate ventilation around Powerwall Maintain minimum clearance from walls Check for obstructions blocking ventilation Consider relocating Powerwall if temperature persists Install additional ventilation if needed
TEMP-002	Powerwall temperature too low	•Ambient temperature below operating range •Installation in unheated space •Extreme cold conditions	Check ambient temperature (minimum: -20°C) Verify installation location meets temperature requirements Consider heating the space if necessary Check for drafts or cold air sources Review installation location requirements
VENT-001	Powerwall ventilation inadequate	•Insufficient clearance •Obstructions blocking airflow •Enclosed space •Poor air circulation	Ensure minimum clearance on all sides (check installation manual) Remove any obstructions Verify installation meets ventilation requirements Check for adequate air circulation Consider additional ventilation if needed

Power and Electrical Errors

Error codes related to power supply, electrical connections, and circuit protection.

Code	Meaning	Possible Causes	Solutions
PWR-001	Powerwall power loss detected	•Circuit breaker tripped •Power supply interruption •Electrical fault •Wiring issue •Grid outage	Check circuit breaker status Verify power supply to Powerwall Check for tripped breakers Inspect electrical connections Verify grid connection Contact qualified electrician if electrical issues persist
PWR-002	Powerwall circuit breaker tripped	•Overcurrent condition •Short circuit •Ground fault •Electrical overload •Faulty component	Do not reset breaker immediately Check for obvious electrical issues Verify no short circuits Check for ground faults Contact qualified electrician before resetting Do not bypass safety systems
PWR-003	Grid connection fault	•Grid voltage out of range •Grid frequency out of range •Utility grid down •AC disconnect switch open •Grid connection fault	Check grid voltage and frequency Verify AC disconnect switch is closed Check utility grid status Wait for grid to stabilize Contact utility company if grid is down Verify grid connection settings
ELEC-001	Powerwall electrical connection fault	•Loose connections •Corroded terminals •Damaged wiring •Improper installation •Connection degradation	Shut down system before inspection Check all electrical connections Inspect for corrosion or damage Verify proper torque on connections Contact qualified electrician for repairs Do not attempt electrical repairs yourself

System and Safety Errors

Error codes related to system-level issues, safety systems, and critical faults.

Code	Meaning	Possible Causes	Solutions
SYS-001	Powerwall system fault requiring service	•Internal component failure •Firmware error •Hardware malfunction •Safety system activation	Do not attempt to repair Check Tesla app for detailed error Document error code and symptoms Contact Tesla support immediately Do not bypass safety systems Schedule service with certified installer
SYS-002	Gateway system fault	•Internal component failure •Firmware error •Hardware malfunction •Communication failure	Do not attempt to repair Check Gateway LED indicators Restart Gateway Contact Tesla support immediately Do not bypass safety systems Schedule service with certified installer
SAFE-001	Powerwall safety system activated	•Safety protection triggered •Emergency shutdown •Critical fault detected •System protection	Do not attempt to restart without diagnosis Check for obvious safety hazards Review all error codes in Tesla app Contact Tesla support Do not bypass safety systems Wait for certified installer
FW-001	Powerwall firmware error	•Firmware corruption •Failed firmware update •Incompatible firmware •Software bug	Do not attempt firmware update without proper knowledge Contact Tesla support for firmware update Verify firmware version compatibility Follow manufacturer update procedures Contact certified installer for assistance
FW-002	Gateway firmware error	•Firmware corruption •Failed firmware update •Incompatible firmware •Software bug	Do not attempt firmware update without proper knowledge Contact Tesla support for firmware update Verify firmware version compatibility Follow manufacturer update procedures Contact certified installer for assistance

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Important Information

If you encounter persistent errors or are unable to resolve an issue using the solutions provided, contact Tesla Energy support or a certified Tesla installer for professional assistance. Battery systems involve high voltage DC electricity, which can be extremely dangerous. Never attempt to repair electrical components, wiring, or battery modules yourself unless you are a qualified and certified technician. Different Tesla Powerwall models (Powerwall 2, Powerwall 3) may have model-specific error codes—always consult your system's documentation and the Tesla app for the most accurate information.

For technical support, contact Tesla Energy customer service or consult a certified Tesla installer for expert assistance.

Safety Information: Battery systems operate at high voltages that can cause serious injury or death. Always shut down the system properly before any work. DC electricity from batteries is present whenever the battery is charged, even if the system is off. Never work on battery systems without proper safety equipment and training. Always follow lockout/tagout procedures. Working with battery systems requires specialized training and certification. If you are unsure about any procedure, contact a qualified technician immediately. Never bypass safety systems or attempt repairs you are not qualified to perform.

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Troubleshooting Guidelines

Common Resolution Steps

✓Check Tesla app for detailed error information
✓Verify system is properly shut down before any inspection
✓Check Powerwall LED status indicators
✓Verify Gateway is online and connected
✓Check Powerwall temperature and ventilation
✓Document error codes and system status for service calls
✓Contact certified Tesla installer for electrical issues

Prevention Strategies

✓Schedule regular professional maintenance
✓Ensure adequate Powerwall ventilation (minimum clearance required)
✓Monitor system performance regularly through Tesla app
✓Maintain proper operating temperature range (-20°C to 50°C)
✓Keep system documentation accessible
✓Maintain proper network connectivity for Gateway
✓Follow manufacturer maintenance schedule

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Frequently Asked Questions

What does a blinking red LED on my Powerwall mean?

A blinking red LED indicates an inverter error that requires attention. Check the Tesla app for specific error details, review system logs, verify all connections are secure, check Powerwall temperature and ventilation, and contact Tesla support or a certified installer if the issue persists.

Why is my Powerwall LED off?

If the LED is off, the Powerwall may be turned off or in standby mode. Check the Powerwall side switch is in ON position, verify circuit breaker status, check power supply to Powerwall, verify Powerwall is properly connected, and check the Tesla app for system status.

What should I do if I see "Circuit Breaker Open" in the Tesla app?

Check the circuit breaker connecting Powerwall to your home, verify the breaker is in ON position, do not reset breaker if electrical fault is suspected, check for obvious electrical issues, and contact a qualified electrician before resetting. Verify no short circuits or ground faults.

How long does Powerwall calibration take?

Powerwall calibration can take up to 24 hours. Wait for calibration to complete, do not interrupt the calibration process, monitor progress in the Tesla app, and no action is required. The system will resume normal operation after calibration.

Why is my Powerwall not charging?

Check battery charge settings in the Tesla app, verify battery state of charge, check battery temperature, verify grid connection, check solar production levels, and review time-based control settings. The battery may be at full capacity or charging may be disabled in settings.

How often should I maintain my Tesla Powerwall?

Regular maintenance helps prevent many error codes. Ensure adequate ventilation (minimum clearance required), monitor system performance regularly through the Tesla app, maintain proper operating temperature range, schedule professional maintenance annually, and follow manufacturer recommendations for your specific model.

Can I repair Tesla Powerwall systems myself?

Some basic troubleshooting like checking the Tesla app, verifying network connections, and checking LED status can be done safely. However, all electrical work, wiring repairs, and battery repairs must be performed by qualified and certified technicians. Battery systems involve high voltage DC electricity that can be extremely dangerous. Always contact a certified Tesla installer for electrical issues.

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Summary

Proper interpretation of Tesla Powerwall error codes and LED status indicators is essential for efficient troubleshooting and maintenance. This comprehensive reference enables quick problem identification and guides appropriate response actions. Tesla Powerwall systems display status through LED indicators and error codes in the Tesla app to indicate specific issues. Understanding these codes helps maintain system performance and maximizes energy storage efficiency. Tesla manufactures premium battery storage systems including Powerwall 2 and Powerwall 3 models, each with model-specific features and status indicators. This guide provides diagnostics and solutions for all common Tesla Powerwall error codes and LED status indicators.

ℹ️For persistent errors or issues that cannot be resolved using this guide, contact Tesla Energy customer support or consult a certified Tesla installer for professional assistance. Some errors may require technical support, component replacement, or specialized diagnostic equipment. Always document error codes and symptoms when contacting support for faster resolution. Note that error code formats and LED indicators may vary by system model and software version—always consult your specific system's documentation and the Tesla app for the most accurate information. Safety should always be the top priority when working with battery systems. Battery systems involve high voltage DC electricity that can cause serious injury or death. Never work on battery systems unless you are a qualified and certified technician. Always follow proper safety procedures and lockout/tagout protocols.