TESLA Fault

DI-F018

DI_f018_hw12vSupplyUV

Also written as DI_F018 / DI F018 / DI_f018_hw12vSupplyUV / di_f018_hw12vsupplyuv

System
DI
Drive Inverter
Type
Fault
Category
Motor
Severity
Fault (Critical)

Why does the exact Tesla alert ID matter?

Record the exact alert ID, including underscores, suffixes, and companion alerts. Tesla alerts that look similar can point to different modules, timestamps, and service procedures.

What does DI-F018 mean?

Tesla fault code in the Drive Inverter (DI) module. An under voltage condition was detected on the 12V system.

Original Description

An under voltage condition was detected on the 12V system.

Affected Tesla Models

Model SModel XModel 3Model YCybertruck

What You May Notice

  • drive inverter critical fault: An under voltage condition was detected on the 12V system.
  • Vehicle enters reduced power or limp mode; acceleration severely limited
  • Red warning on dashboard — vehicle may not allow driving

How to Diagnose and Resolve

  1. 1 Safely pull over and stop the vehicle
  2. 2 Attempt a full reboot: hold both scroll wheels until the Tesla logo appears
  3. 3 If power is not restored after reboot (fault: "An under voltage condition was detected on the 12V"), call Tesla Roadside Assistance
  4. 4 The inverter or motor controller will require inspection at a Service Center

Severity Notes

DI-F018 is classified as a Fault, indicating a critical issue in the Drive Inverter system. Do not continue driving and contact Tesla Service immediately.

Other DI Codes

DI_a001 DI_a002 Tesla alert code in the Drive Inverter (DI) module. Park but... DI_a010 DI_a012 DI_a013 DI_a015 DI_a016 DI_a017
View all DI codes →