Diagnostic guide for OBD-II code U0473
Quick Answer
What U0473 Means
U0473 - for OBD-II code U0473. This affects your vehicle's network communication system.
Most Likely Cause
Multiple possible causes - see diagnostic details below
Difficulty varies depending on the specific cause.
Generally safe to drive short-term. Have it diagnosed soon.
Safe to Drive (Short-Term)
Generally safe to drive short-term. Have it diagnosed soon.
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Detailed Diagnostic Information
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Important Notes
- U0473 is a U-code (network/communications category) in the OBD-II universe. U-codes relate to data network messages between control modules. The exact OEM interpretation of U0473 can vary by vehicle and by the modules involved; some OEMs define it as invalid data or data not received from another module on the vehicle's data bus. Because OEM definitions can differ, treat U0473 as a network communication fault that typically involves the CAN bus or other data links and modules on the vehicle. See: Diagnostic Trouble Codes and Powertrain Codes for general context on U-codes and network faults.
1) Quick summary
- Category: U-code (vehicle network/communications)
- Likely meaning (OEM-dependent): invalid data or data not received from another control module on the vehicle network
- Common symptoms: MIL illumination, erratic instrument cluster behavior, intermittent loss of module data, ancillary systems behaving oddly, or no obvious drive symptom if the fault is intermittent or isolated to a single module
- Primary suspicion: network/data bus issue (CAN bus physical layer or gateway/module on the bus), or a faulting module that is not communicating correctly
- Primary diagnostic approach: verify power/ground integrity, inspect wiring/connectors on the data bus, monitor CAN traffic, identify faulty module(s), check for software/firmware compatibility, and re-test after repair or reflash
This diagnostic guide was generated using verified reference data:
- Wikipedia Technical Articles: OBD-II
Content synthesized from these sources to provide accurate, real-world diagnostic guidance.
Consider professional help if:
- You are not comfortable performing the diagnosis yourself
- The issue requires specialized tools or equipment
- Initial repairs did not resolve the code
- Multiple codes are present simultaneously
- The vehicle is still under warranty
Frequently Asked Questions
What does code U0473 mean?
U0473 indicates Diagnostic guide for OBD-II code U0473. This is a network code related to the network communication system. When your vehicle's computer detects this condition, it stores this code and may illuminate the check engine light.
Can I drive with code U0473?
You may be able to drive short distances with U0473, but it should be addressed soon. Extended driving could lead to additional problems or increased repair costs.
How much does it cost to fix U0473?
Repair costs for U0473 typically range from $100-$800, depending on the root cause and your vehicle. Diagnostic fees are usually $50-$150, and actual repairs vary based on whether parts need replacement. Get multiple quotes for the best price.
What causes code U0473?
Common causes of U0473 include sensor malfunctions, wiring issues, mechanical failures in the network communication system, or related component wear. The specific cause requires proper diagnosis with a scan tool and visual inspection.
Will U0473 clear itself?
U0473 may temporarily clear if the underlying condition improves, but the root cause should still be diagnosed. If the problem persists, the code will return.
Related Diagnostic Codes
Important Disclaimer
This information is for educational purposes only. We are not licensed mechanics. Always consult a certified mechanic for diagnosis and repair. Improper repairs can be dangerous.
Helpful Resources
Last updated: 2025-11-26