CP family
CP_a163_coverOpenDcChgBlocked
DC Fast Charging unavailable - OK to AC charge
What does the CP_a163_coverOpenDcChgBlocked alert mean?
DC charging is unavailable because the charge port (CP) electronic control unit (ECU) has detected that the high voltage (HV) back cover and/or CP AC charging connector are not present on the back of the CP inlet.
What you'll see in your Tesla
- DC Fast Charging unavailable - OK to AC charge
- Service required to restore DC Fast Charging
What triggers it
The CP ECU detects the HV back cover and/or charge port AC charging connector are not present.
When it clears
The CP ECU detects the HV back cover and AC charging connector are present.
Potential impact
DC charging will be unavailable.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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.