OBD Guide

U0183

Lost Communication With Lighting Control Module - Rear A

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$28–89 (est.)

Symptoms

  • Taillights or brake lights do not work
  • Flashing or uneven operation of rear lights
  • Error message on the dashboard
  • Activating emergency lighting mode
  • Problems with other electronic systems in the car

Causes

  • Open or short circuit in the module power supply circuit
  • Rear lighting control module malfunction
  • Problems with the wiring harness or connectors
  • Failures in ECU software
  • Corroded contacts or damaged wiring

How to Fix

  1. Check fuses and relays associated with the lighting system
  2. Inspect connectors and wiring harness for damage
  3. Check the voltage at the lighting module terminals
  4. Scan the module for errors using diagnostic equipment
  5. If necessary, replace the rear light control module

Related codes

Error U0183 by Vehicle Brand