MyTeslaMate
FC family

FC_a293_GB_proxRationality

Not Available

What does the FC_a293_GB_proxRationality alert mean?

The Fast Charge (FC) Electronic Control Unit (ECU) has received a message from the GuoBiao (GB) adapter detecting irrational status between adapter and vehicle charge port via proximity signal.

What you'll see in your Tesla

  • Not Available

What triggers it

The voltage of proximity signal is out of rational range.

When it clears

Detected voltage of proximity signal is within rational range.

Potential impact

Charging session may not start or may become interrupted.

Affected models

Cybertruck Model 3 2017-2023 Model 3 2024+ Model S 2021+ Model X 2021+ Model Y Model Y 2025+

Track your Tesla's alerts automatically

Alerts like this reach MyTeslaMate through your car's Tesla telemetry API. MyTeslaMate logs every alert your Tesla reports and turns it into readable history and real-time notifications — hosted TeslaMate with no server to run.