CP_a121 — PLCRLY lost Comms CP
Full alert identifier: CP_a121_PLCRLY_lostCommsCP
Alert description
The power line communication relay (PLCRLY) is no longer receiving messages from the charge port (CP) electronic control unit (ECU). This alert is used only by PLCRLY.
Potential impact
PLCRLYs on single-phase CP vehicles will not allow combined charging system (CCS) charging above 370A.
Set condition
PLCRLY does not receive messages from the CP ECU within 10 times their expected rate of transmission.
Clear condition
PLCRLY receives the expected messages from the CP ECU.
Signals to check
These diagnostic fields are associated with CP_a121. Check the alert's Alert Log in Service Mode Plus for available values.
| Signal | Unit |
|---|---|
CP Status MIA
CP_
|
— |
Check other alerts
With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of CP_a121.