What Does U054B Mean?
The vehicle network is receiving invalid or corrupted data from the Interior Lighting Control Module. This affects ambient lighting, dome lights, and other interior illumination systems.
Common Causes
35%
Failed interior lighting control module with internal circuit board damage
30%
Corroded or damaged wiring connections at lighting control module
20%
Short circuit in interior lighting circuit causing module confusion and data errors
10%
Poor ground connection at lighting control module causing voltage fluctuations
5%
Communication network issue affecting lighting module bus segment
Diagnostic Steps
1
Step 1: Locate interior lighting control module and inspect for water damage, corrosion, or burnt components
2
Step 2: Check power supply and ground circuits at module connector with multimeter
3
Step 3: Disconnect individual interior light circuits one at a time to isolate potential short circuits causing module data errors
4
Step 4: Monitor network communication signals at lighting module connector to verify signal quality
5
Step 5: Replace interior lighting control module if all circuits test properly and lights show no shorts
Estimated Repair Cost
$150 - $700
Parts + labor, varies by vehicle and location
The vehicle network is receiving invalid or corrupted data from the Interior Lighting Control Module. This affects ambient lighting, dome lights, and other interior illumination systems.
The most common cause of U054B (Invalid Data Received From Interior Lighting Control Module) is: Failed interior lighting control module with internal circuit board damage
Typical repair costs for U054B range from $150 to $700, depending on the vehicle, location, and whether you do it yourself or go to a shop.
Minimal safety concern. Interior lighting malfunction may reduce visibility when entering/exiting vehicle at night but does not affect driving safety.
Start by connecting an OBD2 scanner to read the code and any freeze frame data. Then follow the diagnostic steps specific to U054B to identify the root cause.
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Quick Info
Category
Network
System
Interior Lighting System
Difficulty
Type
Generic (SAE)
Recommended Tools
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