CP_a151_badPilotDiodeDetected
Charge port error detected - Service is required
What does the CP_a151_badPilotDiodeDetected alert mean?
The charge port (CP) electronic control unit (ECU) detects the control pilot voltage is outside of the nominal range while using Tesla electric vehicle supply equipment (EVSE), indicating an internal condition on the CP ECU.
What you'll see in your Tesla
- Charge port error detected - Service is required
- AC charging may not function / OK to Supercharge
What triggers it
The CP ECU detects the control pilot voltage did not go below -10V while using Tesla EVSE.
When it clears
The CP ECU detects a nominal control pilot voltage or the CP ECU is replaced.
Potential impact
AC charging may be unavailable during the next charging session. No expected impact on Supercharging functionality.
Affected models
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