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U0449: Invalid Data Received From Serial Data Gateway Module C

What Does U0449 Mean?

U0449 is a diagnostic trouble code indicating: Invalid Data Received From Serial Data Gateway Module C. This code relates to the network communication system. The vehicle's computer detected a condition outside normal operating parameters and stored this code.

What To Do Next

  1. 1
    Find your vehicle above

    Click your make and model for real owner reports and common causes specific to your vehicle.

  2. 2
    Check for recalls

    Go to nhtsa.gov/recalls and enter your VIN. Free repairs if covered.

  3. 3
    Get a professional diagnosis

    A code alone doesn't identify the exact failed part. A diagnostic ($50–$150) pinpoints the root cause.

Related Codes

U0444 Invalid Data Received From Body Control Module C U0445 Invalid Data Received From Body Control Module D U0446 Invalid Data Received From Body Control Module E U0447 Invalid Data Received From Serial Data Gateway Module A U0448 Invalid Data Received From Serial Data Gateway Module B U0451 Invalid Data Received From Serial Data Gateway Module E U0452 Invalid Data Received From Restraints Control Module U0453 Invalid Data Received From Side Restraints Control Module - Left