U0484

Invalid Data Received From Lighting Control Module - Rear A

Severity

⚠️ Medium

Can you drive?

Do not drive — repair immediately

Approx. repair cost

$28–89 (est.)

Symptoms

Incorrect operation of rear lights
Brake lights flashing or turning off
Error message on the dashboard
Problems with other rear lighting functions
False alarms

Causes

Damage to the wiring harness to the lighting module
Rear lighting control module malfunction
Poor contact in connectors
Short circuit in the circuit
Software error in the module

How to Fix

Check the integrity of the wiring harness to the module
Inspect and clean the connector contacts
Check the power supply and ground of the module
Test or replace rear light module
Update module software (if available)

Related codes

U0481 U0482 U0483