OBD Guide

B3928

Incorrect Environmental Identifier Received from Telematics Communication Interface Control Module

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Check Engine light comes on
  • Problems connecting to telematics services
  • Remote control malfunctions

Causes

  • Telematics module software failure
  • Damage to telematics module wiring harness
  • Contact corrosion
  • Data mismatch in module memory

How to Fix

  1. Check connections and wiring harness of telematics module
  2. Flash or update module software
  3. Replace the telematics module if necessary
  4. Check the CAN bus for errors

Related codes

Error B3928 by Vehicle Brand