CP family
CP_a161_badPilotDiodeDetectedCN
Not Available
What does the CP_a161_badPilotDiodeDetectedCN alert mean?
The charge port (CP) electronic control unit (ECU) detects that the control pilot voltage is not within its nominal range indicating a possible issue with the ECU.
What you'll see in your Tesla
- Not Available
What triggers it
The CP ECU detects that the voltage of the control pilot never goes below -10V.
When it clears
The CP ECU detects a nominal control pilot voltage or the CP ECU is replaced.
Potential impact
AC charging may not be operational on the next attempt. DC fast charging should remain functional.
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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