PCS2 family
PCS2_a118_dcdcFailedToPrechargeToTarget
Not Available
What does the PCS2_a118_dcdcFailedToPrechargeToTarget alert mean?
The Power Conversion System (PCS) cannot precharge the high voltage (HV) bus.
What you'll see in your Tesla
- Not Available
What triggers it
The PCS detects one or more conditions preventing it from precharging the HV bus to its commanded voltage target
When it clears
The DCDC converter is commanded to shut down or receives a new request to precharge the HV bus.
Potential impact
The DCDC converter may not precharge the HV bus to its commanded voltage target, preventing HV battery pack contactors from closing.
Affected models
Cybertruck
Model 3 2017-2023
Model 3 2024+
Model Y
Model Y 2025+
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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.