FC-W136
FC_w136_CA_evseTxBufOvf
Also written as FC_W136 / FC W136 / FC_w136_CA_evseTxBufOvf / fc_w136_ca_evsetxbufovf
Why does the exact Tesla alert ID matter?
Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.
What does FC-W136 mean?
Tesla warning code in the Fast Charging (FC) module. A Electric Vehicle Supply Equipment (EVSE) TX buffer overflow has occurred, and the messages are not being delivered on the EVSE controller area network (CAN).? This alert was formerly named FC_w136_CA_evseTxBufOvf_PT in firmware versions prior to 2017.12. If FC_w136_CA_evseTxBufOvf_PT appears on the vehicle or in the logs, update the vehicle firmware to the current version.
Original Description
A Electric Vehicle Supply Equipment (EVSE) TX buffer overflow has occurred, and the messages are not being delivered on the EVSE controller area network (CAN).? This alert was formerly named FC_w136_CA_evseTxBufOvf_PT in firmware versions prior to 2017.12. If FC_w136_CA_evseTxBufOvf_PT appears on the vehicle or in the logs, update the vehicle firmware to the current version.
Affected Tesla Models
What You May Notice
- Fast Charging alert: A Electric Vehicle Supply Equipment (EVSE) TX buffer overflow has occurred, and the messages are not being delivered on
- Charging speed capped significantly below rated maximum
- Alert shown on the touchscreen when connecting to Supercharger
How to Diagnose and Resolve
- 1 Try a different Supercharger stall to rule out stall-specific issues
- 2 Reboot the vehicle and attempt to reconnect
- 3 Precondition the battery by navigating to a Supercharger in the Tesla app
- 4 Schedule a service appointment if the issue affects multiple chargers
Severity Notes
FC-W136 is a Warning in the Fast Charging system. Schedule service soon. Monitor your vehicle for additional warnings.