CP family
CP_a127_lostCommsHVLINK
Unable to charge
What does the CP_a127_lostCommsHVLINK alert mean?
The charge port (CP) electronic control unit (ECU) loses communication with the HVLINK.
What you'll see in your Tesla
- Unable to charge
- Service is required
What triggers it
The CP ECU does not receive all expected CAN messages from the HVLINK.
When it clears
The CP ECU receives all expected controller area network (CAN) messages from the HVLINK.
Potential impact
Charging does not start.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model S 2021+
Model X 2021+
Model Y
Model Y 2025+
Semitruck
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