OBD Guide

U02BC

Lost Communication With Localization and Mapping Module

Severity
⚠️ Medium
Can you drive?
Yes, but get it checked soon
Approx. repair cost
$33–167 (est.)

Symptoms

  • The navigation system does not work or does not work correctly
  • Error message on the dashboard
  • Malfunctions in driver assistance systems (if any)
  • The Check Engine light may be on on the dashboard.
  • No map updates in the navigation system

Causes

  • Open or short circuit in wiring harness
  • Problems with power supply of the localization module
  • Malfunction of the localization module itself
  • Software problems
  • Corroded or oxidized connectors

How to Fix

  1. Check the integrity of the wiring harness to the localization module
  2. Check fuses and module power supply
  3. Inspect connectors for corrosion or damage
  4. Try to reboot the module (disconnect and connect the battery)
  5. Run software diagnostics

Related codes

Error U02BC by Vehicle Brand