TESLA Diagnostic

EPAS-D003

EPAS_d003_KFC_NVRAM_MNG_WRITE

Also written as EPAS_D003 / EPAS D003 / EPAS_d003_KFC_NVRAM_MNG_WRITE / epas_d003_kfc_nvram_mng_write

System
EPAS
EPAS
Type
Diagnostic
Category
Network
Severity
Diagnostic / Info

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 EPAS-D003 mean?

Tesla diagnostic code in the EPAS (EPAS) module. A write to the Non-Volatile Random Access Memory (NVRAM) (DataFlash) has failed. Both the main and redundant blocks could not be written to the NVRAM. This may be caused by a defective NVRAM, incorrect Cyclic Redundancy Check (CRC), misconfigured NVRAM, or the drivers were not initialized. The reset conditions require a software restart, function inhibition reset, ignition change, and another function inhibition reset.

Original Description

A write to the Non-Volatile Random Access Memory (NVRAM) (DataFlash) has failed. Both the main and redundant blocks could not be written to the NVRAM. This may be caused by a defective NVRAM, incorrect Cyclic Redundancy Check (CRC), misconfigured NVRAM, or the drivers were not initialized. The reset conditions require a software restart, function inhibition reset, ignition change, and another function inhibition reset.

Affected Tesla Models

Model SModel XModel 3Model Y

What You May Notice

  • EPAS alert: A write to the Non-Volatile Random Access Memory (NVRAM) (DataFlash) has failed. Both the main and redundant blocks coul
  • Steering is functional but may feel slightly different

How to Diagnose and Resolve

  1. 1 Reboot the vehicle
  2. 2 Check for OTA software updates
  3. 3 Schedule service if the steering feels abnormal

Severity Notes

EPAS-D003 is a diagnostic or informational code in the EPAS system. Typically no immediate action is required.

Other EPAS Codes

View all EPAS codes →