MyTeslaMate
FC family

FC_a277_GB_posToPcbDeltaLo

Not Available

What does the FC_a277_GB_posToPcbDeltaLo alert mean?

The Fast Charge (FC) Electronic Control Unit (ECU) has detected a temperature gap between positive pin and Printed Circuit Board (PCB) below -40deg centigrade, limiting the Direct Current (DC) charge limit to 60A.

What you'll see in your Tesla

  • Not Available

What triggers it

FC ECU has detected a temperature gap lower than -40deg centigrade positive pin and PCB.

When it clears

Unplug charge handle.

Potential impact

DC charge current is limited to 60A.

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.