charging TESLA MODEL S 2021 Owner´s Manual

2. Self-test of internal ground fault monitoring circuit failed3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds,
and turn the circuit breaker ON again. Then try reconnecting the Wall Connector to the
vehicle.
3.
If the issue persists, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and
torqued according to the instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall
Connector and try charging again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment
through your Mobile App.
(CC_a005)
Unable to charge - Wall Connector GFCI tripped
Disconnect and retry or use different equipment
What this alert means:
Ground fault. Current is leaking through an unsafe path. Possible Line to ground or Neutral to ground fault.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If the problem persists, turn OFF the circuit breaker servicing the Wall Connector, wait 10 seconds, turn the circuit breaker ON again, then try reconnecting the Wall Connector to the vehicle. If the problem persists, contact Tesla.
(CC_a006)
Unable to charge - Wall Connector overcurrent
Disconnect and retry or use different equipment
What this alert means:
Over current protection.
What to do:
Reduce the vehicle

An internal issue was detected by the Wall Connector.1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds,
and turn the circuit breaker ON again. Then try reconnecting the Wall Connector to the
vehicle.
3.
If the issue persists, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and
torqued according to the instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall
Connector and try charging again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment
through your Mobile App.
(CC_a011)
Unable to charge - Wall Connector too hot
Let Wall Connector cool and try again
What this alert means:
Over temperature protection (latchoff).
What to do:
Make sure the Wall Connector is not covered by anything and that there is no heat source nearby. If the problem persists in normal ambient temperatures (under 100

(CC_a015)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If possible, plug the vehicle into another Wall Connector or a Mobile Connector to determine if the vehicle is able to communicate with other charging equipment. If the problem persists, contact Tesla.
(CC_a016)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If possible, plug the vehicle into another Wall Connector or a Mobile Connector to determine if the vehicle is able to communicate with other charging equipment. If the problem persists, contact Tesla.
(CC_a017)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If possible, plug the vehicle into another Wall Connector or a Mobile Connector to determine if the vehicle is able to communicate with other charging equipment. If the problem persists, contact Tesla.
(CC_a018)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If possible, plug the vehicle into another Wall Connector or a Mobile Connector to determine if the vehicle is able to communicate with other charging equipment. If the problem persists, contact Tesla.
Troubleshooting Alerts
241Consumer Information

(CC_a019)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If possible, plug the vehicle into another Wall Connector or a Mobile Connector to determine if the vehicle is able to communicate with other charging equipment. If the problem persists, contact Tesla.
(CC_a020)
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1.
Contactor not working
2.
Self-test of internal ground fault monitoring circuit failed
3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds,
and turn the circuit breaker ON again. Then try reconnecting the Wall Connector to the
vehicle.
3.
If the issue persists, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and
torqued according to the instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall
Connector and try charging again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment
through your Mobile App.
(CC_a021)
Unable to charge - No primary Wall Connector
Check that primary unit is powered and available
What this alert means:
Troubleshooting Alerts
242MODEL S Owner

(CC_a025)
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1.
Contactor not working
2.
Self-test of internal ground fault monitoring circuit failed
3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds,
and turn the circuit breaker ON again. Then try reconnecting the Wall Connector to the
vehicle.
3.
If the issue persists, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and
torqued according to the instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall
Connector and try charging again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment
through your Mobile App.
(CC_a026)
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1.
Contactor not working
2.
Self-test of internal ground fault monitoring circuit failed
3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
Troubleshooting Alerts
244MODEL S Owner

1. Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds,
and turn the circuit breaker ON again. Then try reconnecting the Wall Connector to the
vehicle.
3.
If the issue persists, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and
torqued according to the instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall
Connector and try charging again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment
through your Mobile App.
(CC_a027)
Unable to charge - Wall Connector issue
Wall Connector needs service
What this alert means:
Wall Connector hardware issue. Possible issues include:
1.
Contactor not working
2.
Self-test of internal ground fault monitoring circuit failed
3.
Thermal sensor disconnected
4.
Other hardware component issues
What to do:
An internal issue was detected by the Wall Connector.
1.
Try charging again by disconnecting the Wall Connector from the vehicle and reconnecting.
2.
If the issue persists, turn OFF the circuit breaker for the Wall Connector, wait 10 seconds,
and turn the circuit breaker ON again. Then try reconnecting the Wall Connector to the
vehicle.
3.
If the issue persists, check for loose connections.
a.
Make sure there is no power to the Wall Connector.
b.
Remove the face plate and inspect the wiring terminals for any loose connections.
c.
Contact an electrician if necessary to make sure all wires are properly connected and
torqued according to the instructions in the Wall Connector Installation Manual.
4.
Once all connections have been checked and made secure, restore power to the Wall
Connector and try charging again by reconnecting to the vehicle.
5.
If the issue persists, the Wall Connector needs service. Schedule a service appointment
through your Mobile App.
Troubleshooting Alerts
245Consumer Information

(CC_a028)
Unable to charge - Incorrect switch setting
Wall Connector rotary switch must be adjusted
What this alert means:
Incorrect rotary switch setting.
What to do:
Make sure there is no power to the Wall Connector. Remove the face plate and adjust the rotary switch to a valid operating current setting. The correlation between switch setting and current is printed on the inside of the Wall Connector. You can also refer to the Set the Operating Current section in the Wall Connector Installation Manual. If the Wall Connector is set up for load sharing (paired with other Wall Connectors), the rotary switch of the master unit must be set to an operating current setting that allows each paired Wall Connector to receive at least 6A of charge current. Example: Three Wall Connectors are paired for load sharing. The master unit needs to be set to a current of at least 3 * 6A = 18A or greater.
(CC_a029)
Unable to charge - Vehicle connection issue
Insert charge handle fully into charge port
What this alert means:
A communication error occurred between the Wall Connector and the vehicle.
What to do:
Try again by disconnecting the Wall Connector from the vehicle and reconnecting. If possible, plug the vehicle into another Wall Connector or a Mobile Connector to determine if the vehicle is able to communicate with other charging equipment. If the problem persists, contact Tesla.
(CC_a030)
Unable to charge - Primary / paired unit mismatch
Wall Connector current ratings must match
What this alert means:
Circuit Breaker Sharing Network: The paired Wall Connectors have different maximum current capabilities.
What to do:
Only Wall Connectors with the same maximum current capabilities can be paired in a load-sharing (circuit breaker sharing) network. Inspect the type labels on the Wall Connectors to make sure the current capabilities match. It is further recommended to only pair Wall Connectors with the same part number, as an easy way to make sure paired units are compatible.
Troubleshooting Alerts
246MODEL S Owner

(CC_a041)
Charge rate reduced - Wall connection hot
Outlet or Wall Connector wiring must be checked
High temperature detected by Wall Connector alerts indicate the building connection to the
Wall Connector is getting too warm, so charging has been slowed to protect the wiring and Wall
Connector.
This is not typically an issue with your vehicle or your Wall Connector, but rather an issue with the building wiring. This may be caused by a loose building wiring connection to the Wall
Connector and can be
fixed quickly by an electrician.
To regain normal charge speed, contact an electrician to inspect the building wiring connection
to the Wall Connector. They should make sure that all wires are properly connected and torqued
according to the installation guide for the Wall Connector.
Wall Connector installation guides can be found here.
(CP_a004)
Charging equipment not recognized
Try again or try different equipment
The charge port is unable to detect whether a charge cable is inserted or the type of charge
cable connected.
If this alert appears while a charge cable is connected, it should be determined whether the
issue is caused by the charging equipment or the vehicle. Try charging the vehicle using
different external charging equipment (charge cable, charging station, charging stall, etc.).

You can also try charging your vehicle using a Tesla Supercharger or Destination Charging location, all of which can be located through the map on your vehicle

(CP_a055)
Charging equipment communication lost
Check power source and charging equipment
Charging stopped because communication between the vehicle and the external charging
equipment was interrupted.
Confirm whether the external charging equipment is powered by looking for any status lights,
displays, or other indicators on the equipment.
If the equipment is not powered, try to restore the external charging equipment