Description:

This error code, VTV 523773.04, indicates that the voltage on the CAN bus (CAN+) is below 2 volts. Low voltage can disrupt communication on the CAN bus, leading to operational issues with the control software.

Reaction:

When this error is detected, the control software may function with significant limitations or cease to function entirely, impacting the vehicle’s performance.

Recommendations:

Inspect CAN Bus Wiring:

• Check all CAN bus wiring for signs of damage, corrosion, or loose connections.
• Repair or replace any compromised wiring.

Verify Voltage Levels:

• Use a multimeter to measure the voltage on the CAN bus (CAN+). Ensure it is within the specified range (typically 2.5-3.5 volts).
• Identify and address any sources of low voltage.

Check for Open Circuits or Ground Faults:

• Inspect the CAN bus for any open circuits or ground faults.
• Repair or replace any damaged components causing the low voltage.

Update Control Software:

• Ensure that the control software is up to date to address any known issues with CAN bus voltage management.

Consult Technical Support:

• If the issue persists, consult technical support for further diagnostics and troubleshooting.
• Provide detailed information on the CAN bus voltage and any related symptoms to aid in diagnosis.

Monitor System Performance:

• After addressing the issues, monitor the system to ensure stable CAN bus communication.
• Record any recurring issues for further analysis and resolution.

Note:

Maintaining proper voltage levels on the CAN bus is essential for reliable communication between control units. Regular inspections and maintenance of the CAN bus wiring and components can help prevent voltage-related issues and ensure optimal performance of the vehicle’s control software.