MyTeslaMate
PCS2REXB family

PCS2REXB_a051_bmsMia

Unable to charge

What does the PCS2REXB_a051_bmsMia alert mean?

The Power Conversion System (PCS) does not receive one or more Controller Area Network (CAN) messages from the Battery Management System (BMS)

What you'll see in your Tesla

  • Unable to charge
  • Service is required

What triggers it

The PCS does not receive all expected CAN messages from the BMS

When it clears

The PCS receives all expected CAN messages from the BMS

Potential impact

DCDC and DCAC may be limited or unavailable.

Affected models

Cybertruck

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.