U0449
Invalid Data Received From Serial Data Gateway Module C
U0449 is an OBD-II diagnostic trouble code meaning: Invalid Data Received From Serial Data Gateway Module C. Common causes: problems with the c module software, open or short circuit in the communication circuit. Estimated repair cost: $33–167.
Symptoms
- Check Engine Light Is On
- Failure of some systems (climate control, multimedia)
- Information display malfunctions
- Errors in other vehicle systems
Causes
- Problems with the C module software
- Open or short circuit in the communication circuit
- Module C itself is faulty
- Module power problems
- Corrosion of contacts in connectors
How to Fix
- CAN bus diagnostics using a scanner
- Checking the integrity of the wiring harness to module C
- Checking module power and grounding
- Flashing or replacing module C
- Cleaning contacts in connectors
Related codes
Error U0449 by Vehicle Brand
FAQ
What does the U0449 code mean?
U0449 is an OBD-II diagnostic trouble code that indicates: Invalid Data Received From Serial Data Gateway Module C
What causes a U0449 error code?
The most common causes of U0449 include: Problems with the C module software; Open or short circuit in the communication circuit; Module C itself is faulty; Module power problems.
How do I fix a U0449 diagnostic trouble code?
To fix U0449: CAN bus diagnostics using a scanner. Checking the integrity of the wiring harness to module C. Checking module power and grounding. For a complete diagnosis, use an OBD-II scanner.
Is it safe to drive with U0449?
Yes, but get it checked soon
How much does it cost to fix U0449?
The estimated repair cost for U0449 is $33–167. Actual cost depends on your vehicle, location, and labor rates.
See also: Russian version · NationStat