TESLA Network

Tesla DCDC Alert Codes

DCDC reference page with 5 Tesla alert codes, 4 detailed descriptions, severity counts, and diagnostic context.

Critical

Warning

Caution

Info

What the DCDC system covers

DCDC alerts belong to Tesla's proprietary diagnostic alert system and are grouped under the network category.

Read all active alerts together instead of diagnosing a single code in isolation.

Check recent service, firmware updates, and low-voltage battery condition.

Use Tesla Service or a qualified EV technician for safety-critical systems.

Warning 3 Alert 2

Rows with a linked code have a dedicated detail page.

Code	Severity	Type	Description
DCDC_w002 DCDC_w002_overTemperature	Warning	Warning	DCDC_w002 - over Temperature Tesla warning code in the DCDC (DCDC) module. There has been an over-temperature event detected in the DCDC converter. If this alert is present, the DCDC temperature has exceeded 40� C.
DCDC_w011 DCDC_w011_outputVRegulationError	Warning	Warning	DCDC_w011 - output V Regulation Error Tesla warning code in the DCDC (DCDC) module related to output v regulation error.
DCDC_w012 DCDC_w012_calibrationFault	Warning	Warning	DCDC_w012 - calibration Fault Tesla warning code in the DCDC (DCDC) module. There is a DCDC calibration issue.
DCDC_a001 DCDC_a001_DCDC_Converter_Fault__12V48V_S	Warning	Alert	DCDC_a001 - DC-DC Converter Fault - 12V/48V System Tesla alert code in the DC-DC Converter module. DC-DC Converter Fault - 12V/48V System
DCDC_a002 DCDC_a002_DCDC_Converter_Over_Temperatur	Warning	Alert	DCDC_a002 - DC-DC Converter Over Temperature Tesla alert code in the DC-DC Converter module. DC-DC Converter Over Temperature