Tesla UMC Alert Codes
Universal Mobile Connector reference page with 48 Tesla alert codes, 4 detailed descriptions, severity counts, and diagnostic context.
What the UMC system covers
Universal Mobile Connector alerts belong to Tesla's proprietary diagnostic alert system and are grouped under the charging category.
Alert type breakdown
Tesla UMC code list
Rows with a linked code have a dedicated detail page.
| Code | Severity | Type | Description |
|---|---|---|---|
| UMC_a001 UMC_a001_gndMonIntrptLineSide | Caution | Alert | UMC_a001 - gnd Mon Intrpt Line Side Tesla alert code in the Universal Mobile Connector (UMC) module related to gnd mon intrpt line side. |
| UMC_a002 UMC_a002_GFCITripped | Caution | Alert | UMC_a002 - GFCI Tripped Tesla alert code in the Universal Mobile Connector (UMC) module related to gfci tripped. |
| UMC_a003 UMC_a003_GFCISelfTestFault | Caution | Alert | UMC_a003 - GFCI Self Test Fault Tesla alert code in the Universal Mobile Connector (UMC) module. UMC GFCI self test failed |
| UMC_a004 UMC_a004_inputOverVoltage | Caution | Alert | UMC_a004 - input Over Voltage Tesla alert code in the Universal Mobile Connector (UMC) module related to input over voltage. |
| UMC_a005 UMC_a005_inputUnderVoltage | Caution | Alert | UMC_a005 - input Under Voltage Tesla alert code in the Universal Mobile Connector (UMC) module related to input under voltage. |
| UMC_a006 UMC_a006_contactorWelded | Caution | Alert | UMC_a006 - contactor Welded Tesla alert code in the Universal Mobile Connector (UMC) module related to contactor welded. |
| UMC_a007 UMC_a007_pcbaOT | Caution | Alert | UMC_a007 - pcba OT Tesla alert code in the Universal Mobile Connector (UMC) module related to pcba ot. |
| UMC_a008 UMC_a008_wallPlugOT | Caution | Alert | UMC_a008 - wall Plug OT Tesla alert code in the Universal Mobile Connector (UMC) module related to wall plug ot. |
| UMC_a009 UMC_a009_vehConnOT | Caution | Alert | UMC_a009 - veh Conn OT Tesla alert code in the Universal Mobile Connector (UMC) module related to veh conn ot. |
| UMC_a010 UMC_a010_inputOT | Caution | Alert | UMC_a010 - input OT Tesla alert code in the Universal Mobile Connector (UMC) module related to input ot. |
| UMC_a011 UMC_a011_proxDisconnected | Caution | Alert | UMC_a011 - prox Disconnected Tesla alert code in the Universal Mobile Connector (UMC) module related to prox disconnected. |
| UMC_a012 UMC_a012_pilotFault | Caution | Alert | UMC_a012 - pilot Fault Tesla alert code in the Universal Mobile Connector (UMC) module related to pilot fault. |
| UMC_a013 UMC_a013_SA_Temperature | Caution | Alert | UMC_a013 - SA Temperature Tesla alert code in the Universal Mobile Connector (UMC) module related to sa temperature. |
| UMC_a014 UMC_a014_SA_Genealogy | Caution | Alert | UMC_a014 - SA Genealogy Tesla alert code in the Universal Mobile Connector (UMC) module related to sa genealogy. |
| UMC_a015 UMC_a015_SA_Connection | Caution | Alert | UMC_a015 - SA Connection Tesla alert code in the Universal Mobile Connector (UMC) module related to sa connection. |
| UMC_a016 UMC_a016_pcbaOTFoldback | Caution | Alert | UMC_a016 - pcba OT Foldback Tesla alert code in the Universal Mobile Connector (UMC) module related to pcba ot foldback. |
| UMC_a017 UMC_a017_wallPlugOTFoldback | Caution | Alert | UMC_a017 - wall Plug OT Foldback Tesla alert code in the Universal Mobile Connector (UMC) module related to wall plug ot foldback. |
| UMC_a018 UMC_a018_vehConnOTFoldback | Caution | Alert | UMC_a018 - veh Conn OT Foldback Tesla alert code in the Universal Mobile Connector (UMC) module related to veh conn ot foldback. |
| UMC_a019 UMC_a019_inputOTFoldback | Caution | Alert | UMC_a019 - input OT Foldback Tesla alert code in the Universal Mobile Connector (UMC) module related to input ot foldback. |
| UMC_a020 UMC_a020_applicationCRC | Caution | Alert | UMC_a020 - application CRC Tesla alert code in the Universal Mobile Connector (UMC) module related to application crc. |
| UMC_a021 UMC_a021_dataBus | Caution | Alert | UMC_a021 - data Bus Tesla alert code in the Universal Mobile Connector (UMC) module related to data bus. |
| UMC_a022 UMC_a022_criticalRAM | Caution | Alert | UMC_a022 - critical RAM Tesla alert code in the Universal Mobile Connector (UMC) module related to critical ram. |
| UMC_a023 UMC_a023_adcSelfTest | Caution | Alert | UMC_a023 - ADC Self Test Tesla alert code in the Universal Mobile Connector (UMC) module related to adc self test. |
| UMC_w001 UMC_w001_gndMonIntrptLineSide | Warning | Warning | UMC_w001 - gnd Mon Intrpt Line Side Tesla warning code in the Universal Mobile Connector (UMC) module related to gnd mon intrpt line side. |
| UMC_w002 UMC_w002_GFCITripped | Warning | Warning | UMC_w002 - GFCI Tripped Tesla warning code in the Universal Mobile Connector (UMC) module. The Gen 2 Universal Mobile Connector (UMC) detects a leakage current flowing through an unexpected path (vehicle side). |
| UMC_w003 UMC_w003_GFCISelfTestFault | Warning | Warning | UMC_w003 - GFCI Self Test Fault Tesla warning code in the Universal Mobile Connector (UMC) module related to gfci self test fault. |
| UMC_w004 UMC_w004_inputOverVoltage | Warning | Warning | UMC_w004 - input Over Voltage Tesla warning code in the Universal Mobile Connector (UMC) module related to input over voltage. |
| UMC_w005 UMC_w005_inputUnderVoltage | Warning | Warning | UMC_w005 - input Under Voltage Tesla warning code in the Universal Mobile Connector (UMC) module related to input under voltage. |
| UMC_w006 UMC_w006_contactorWelded | Warning | Warning | UMC_w006 - contactor Welded Tesla warning code in the Universal Mobile Connector (UMC) module related to contactor welded. |
| UMC_w007 UMC_w007_pcbaOT | Warning | Warning | UMC_w007 - pcba OT Tesla warning code in the Universal Mobile Connector (UMC) module related to pcba ot. |
| UMC_w008 UMC_w008_wallPlugOT | Warning | Warning | UMC_w008 - wall Plug OT Tesla warning code in the Universal Mobile Connector (UMC) module related to wall plug ot. |
| UMC_w009 UMC_w009_vehConnOT | Warning | Warning | UMC_w009 - veh Conn OT Tesla warning code in the Universal Mobile Connector (UMC) module related to veh conn ot. |
| UMC_w010 UMC_w010_inputOT | Warning | Warning | UMC_w010 - input OT Tesla warning code in the Universal Mobile Connector (UMC) module related to input ot. |
| UMC_w011 UMC_w011_proxDisconnected | Warning | Warning | UMC_w011 - prox Disconnected Tesla warning code in the Universal Mobile Connector (UMC) module related to prox disconnected. |
| UMC_w012 UMC_w012_pilotFault | Warning | Warning | UMC_w012 - pilot Fault Tesla warning code in the Universal Mobile Connector (UMC) module related to pilot fault. |
| UMC_w013 UMC_w013_SA_Temperature | Warning | Warning | UMC_w013 - SA Temperature Tesla warning code in the Universal Mobile Connector (UMC) module related to sa temperature. |
| UMC_w014 UMC_w014_SA_Genealogy | Warning | Warning | UMC_w014 - SA Genealogy Tesla warning code in the Universal Mobile Connector (UMC) module related to sa genealogy. |
| UMC_w015 UMC_w015_SA_Connection | Warning | Warning | UMC_w015 - SA Connection Tesla warning code in the Universal Mobile Connector (UMC) module related to sa connection. |
| UMC_w016 UMC_w016_pcbaOTFoldback | Warning | Warning | UMC_w016 - pcba OT Foldback Tesla warning code in the Universal Mobile Connector (UMC) module related to pcba ot foldback. |
| UMC_w017 UMC_w017_wallPlugOTFoldback | Warning | Warning | UMC_w017 - wall Plug OT Foldback Tesla warning code in the Universal Mobile Connector (UMC) module related to wall plug ot foldback. |
| UMC_w018 UMC_w018_vehConnOTFoldback | Warning | Warning | UMC_w018 - veh Conn OT Foldback Tesla warning code in the Universal Mobile Connector (UMC) module related to veh conn ot foldback. |
| UMC_w019 UMC_w019_inputOTFoldback | Warning | Warning | UMC_w019 - input OT Foldback Tesla warning code in the Universal Mobile Connector (UMC) module related to input ot foldback. |
| UMC_w020 UMC_w020_applicationCRC | Warning | Warning | UMC_w020 - application CRC Tesla warning code in the Universal Mobile Connector (UMC) module related to application crc. |
| UMC_w021 UMC_w021_dataBus | Warning | Warning | UMC_w021 - data Bus Tesla warning code in the Universal Mobile Connector (UMC) module related to data bus. |
| UMC_w022 UMC_w022_criticalRAM | Warning | Warning | UMC_w022 - critical RAM Tesla warning code in the Universal Mobile Connector (UMC) module related to critical ram. |
| UMC_w023 UMC_w023_adcSelfTest | Warning | Warning | UMC_w023 - ADC Self Test Tesla warning code in the Universal Mobile Connector (UMC) module related to adc self test. |
| UMC_w024 UMC_w024_gndResistanceHigh | Warning | Warning | UMC_w024 - gnd Resistance High Tesla warning code in the Universal Mobile Connector (UMC) module. The Gen 2 Universal Mobile Connector (UMC) detects high ground resistance on the line side. |
| UMC_w025 UMC_w025_cntrOpenExpectedClose | Warning | Warning | UMC_w025 - cntr Open Expected Close Tesla warning code in the Universal Mobile Connector (UMC) module. There is a measurement in the Gen 2 Universal Mobile Connector (UMC) that indicates the relays are open when they are expected to be closed. This alert can also be triggered in IT grids with an unusually high ground impedance. |