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UMC_a004 — Input Over Voltage

Full alert identifier: UMC_a004_inputOverVoltage

Message shown in the car

Unable to charge with Mobile Connector Voltage too high / Try a different wall outlet

Alert description

UMC AC input voltage exceeded upper limit

Potential impact

UMC will not allow charging until AC input voltage is within 90-300 V RMS

Set condition

UMC input voltage has risen above 300 V RMS

Clear condition

UMC input voltage has fallen below 300 V RMS

Signals to check

Open this alert in Service Mode Plus and review the Payload tab. Use the field names below to identify the values shown by your vehicle.

Signal Unit
Input Neutral Voltage UMC_a004_inputNeutralVoltage V
Input Voltage UMC_a004_inputVoltage V
Line Voltage UMC_a004_lineVoltage Vrms

Check other alerts

With Service Mode Plus enabled, open Service Alerts → All. Review the other alerts for clues to the cause of UMC_a004.

Browse all UMC alert codes