OBD2 Code U0564: Invalid Voice Recognition Data
Diagnostic trouble code U0564 indicates that a control module on the vehicle's communication network, typically the body control module (BCM) or driver interface module, has received invalid, corrupted, or out-of-range data from the voice recognition module. This code falls under the network communication category (U0XXX) and is related to data exchange issues on the Controller Area Network (CAN) bus. The voice recognition module may be a standalone component or integrated into the infotainment system, navigation unit, or telematics module.
1. Commonly Affected Makes
This is a generic OBD2 code, potentially applicable to any manufacturer using this diagnostic standard.
2. Most Common Causes
- Internal failure of the voice recognition module
- Electromagnetic interference on the CAN bus wiring
- Loose connections or corrosion at the voice recognition module connectors
- Damaged, shorted, or abnormal resistance in the CAN bus wiring
- Software glitch or outdated firmware in the voice recognition module
- Faulty network gateway module that manages communication between buses
3. Symptoms You Will Notice
- Voice recognition system unresponsive or not working
- Illuminated check engine light or service soon light
- Other communication-related symptoms like intermittent audio or navigation issues
4. Step-by-Step Diagnosis
Scan for all stored codes and note any related U-codes
Inspect the voice recognition module connectors for corrosion, bent pins, or loose fit
Check CAN bus wiring for shorts, opens, or high resistance using a multimeter
Test the voice recognition module by attempting communication with a scan tool
Update the voice recognition module firmware if applicable
If all else fails, replace the voice recognition module and reprogram if necessary
5. Frequently Asked Questions
Is it safe to drive?▼
Yes, it is generally safe to drive with code U0564, as it does not affect critical safety systems. However, you may experience loss of voice recognition and possibly other infotainment functions. It is recommended to diagnose and repair the issue to prevent potential communication problems.
How much does it cost to fix?▼
The cost to fix code U0564 can range from $100 to $600, depending on the root cause. Simple fixes like cleaning connectors or updating software may cost under $200, while replacing the voice recognition module can run $300 to $600 including labor.