Is FC_W139 the same as FC-W139?

Yes. FC_W139, FC W139, and FC-W139 are alternate spellings of the same Tesla alert code. Also written as: FC-W139, FC_W139, FC W139, FC_w139_CA_ss2NotLow, fc_w139_ca_ss2notlow.

What symptoms can FC-W139 cause?

Fast Charging alert: There is a CHAdeMO adapter malfunction. Charging speed capped significantly below rated maximum Alert shown on the touchscreen when connecting to Supercharger

What should I check for FC-W139?

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

Is it safe to drive with FC-W139?

🟡 Check the vehicle display for drive or charge restrictions and schedule service promptly.

TESLA Warning

FC-W139

FC_w139_CA_ss2NotLow

Also written as FC_W139 / FC W139 / FC_w139_CA_ss2NotLow / fc_w139_ca_ss2notlow

System

Fast Charging

Type

Warning

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-W139 mean?

Tesla warning code in the Fast Charging (FC) module. There is a CHAdeMO adapter malfunction.

Original Description

There is a CHAdeMO adapter malfunction.

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

Fast Charging alert: There is a CHAdeMO adapter malfunction.
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-W139 is a Warning in the Fast Charging system. Schedule service soon. Monitor your vehicle for additional warnings.

Other FC Codes

FC_a001 FC_a002 FC_a065 FC_a129 FC_a130 FC_a131 FC_a132 FC_a133

View all FC codes →