Invalid Data Received From Exterior Lamp Module
The U0496 code means the vehicle's onboard diagnostic system has detected: Invalid Data Received From Exterior Lamp Module. This is a low severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (parts and labor)
Network codes mean modules are not communicating. You need a scanner that reads all systems to find the problem.
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Common Symptoms
- Headlights flickering
- Turn signals flashing at wrong rate
- Running lights brightness inconsistent
- Exterior lighting warning on dash
Probable Causes (Ranked by Likelihood)
- Failed exterior lamp module Very High
- LED driver circuit fault High
- CAN bus data error Moderate
- Corroded light socket Low
Step-by-Step Diagnostic Procedure
-
Check all exterior bulbs and sockets
-
Inspect lamp module connector
-
Scan lamp module for codes
-
Test voltage at light sockets
Frequently Asked Questions
Can I drive with U0496?
Yes, but verify all lights work. Non-functioning lights are a safety and legal issue.
What causes U0496?
Usually a corroded socket or failed LED driver circuit.
How much to fix?
Typically $100 to $500.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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