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Engine-Codes – Generic – U0058

U0058 Code - Vehicle Communication Bus 'D' (+) Low

Quick Answer

The U0058 diagnostic trouble code (DTC) indicates that there is a low voltage condition on the Vehicle Communication Bus 'D' (+). Common causes include Corroded or damaged wiring harness/connectors, Faulty communication bus module, Low battery voltage. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means
U0058 indicates Vehicle Communication Bus 'D' (+) Low.
Common causes
Common causes include Corroded or damaged wiring harness/connectors, Faulty communication bus module, Low battery voltage.
Severity
High - diagnose this code as soon as possible.
Can I drive?
Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
What is this?
Table of contents Created and updated by William Orellana on Sep 05, 2024
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Code U0058 Description

The U0058 diagnostic trouble code (DTC) indicates that there is a low voltage condition on the Vehicle Communication Bus 'D' (+). This bus is a network that allows various electronic control units (ECUs) in the vehicle to communicate with each other. When the voltage on this bus is lower than expected, it can lead to communication errors between different systems, affecting the overall performance and functionality of the vehicle.

OBDII Code U0058 - Vehicle Communication Bus 'D' (+) Low
U0058 Code - Vehicle Communication Bus 'D' (+) Low

Common Causes of U0058

  1. Corroded or damaged wiring harness/connectors
  2. Faulty communication bus module
  3. Low battery voltage
  4. Water intrusion or moisture affecting the electrical connections
  5. Issues with the power supply to the communication bus

Symptoms of U0058

  1. Check engine light illuminated
  2. Intermittent or complete loss of communication with various vehicle systems
  3. Erratic behavior of electronic components (e.g., gauges flickering, warning lights flashing)
  4. Difficulty starting the vehicle
  5. Reduced overall performance or drivability

How to Fix U0058

  1. Perform a visual inspection of wiring harnesses and connectors for any signs of damage or corrosion.
  2. Check the battery voltage and ensure it meets the manufacturer's specifications.
  3. Test the communication bus module for proper operation and replace if necessary.
  4. Address any water intrusion or moisture issues by sealing connectors and ensuring proper drainage.
  5. Clear the DTC and test drive the vehicle to verify that the issue has been resolved.

Cost to Fix U0058

The cost of repairing a U0058 code can vary depending on the specific cause of the issue and the labor rates of the auto repair shop. In general, the parts needed for this repair may range from $50 to $200, while labor costs can add another $100 to $300 to the total bill. Overall, the total repair cost could range from $150 to $500. It's important to note that these estimates are approximate and that actual costs may differ based on the factors mentioned earlier.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about U0058 Code

1. What does the OBDII code U0058 mean?

U0058 indicates a low signal or communication issue on the Vehicle Communication Bus 'D' (+), which is part of the vehicle's network system used for data exchange between modules.

2. What are the common symptoms of the U0058 code?

Common symptoms include illuminated warning lights on the dashboard, such as the check engine light, loss of communication with certain modules, or intermittent malfunctions in electronic systems.

3. What causes the U0058 code to appear?

The code may be triggered by damaged wiring or connectors in the communication bus, a faulty control module, network interference, or low battery voltage.

4. How is the U0058 code diagnosed?

A technician will use a scan tool to check for related codes, inspect the wiring and connectors in the communication network, and test the modules for proper functionality.

5. Can a weak or dead battery cause the U0058 code?

Yes, a weak or dead battery can cause voltage issues that disrupt the communication bus, potentially triggering the U0058 code.

6. Is the U0058 code serious?

While the car may still be drivable, the code can indicate critical communication issues that may affect vehicle performance or safety systems, so it should be addressed promptly.

7. Can I fix the U0058 code myself?

If you're experienced with automotive electrical systems, you can inspect and repair damaged wires or connectors. Otherwise, it's best to consult a professional mechanic.

8. What tools are needed to troubleshoot the U0058 code?

You’ll need an OBDII scan tool, a multimeter for checking voltage and continuity, and possibly a wiring diagram for the vehicle’s communication system.

9. How much does it cost to repair the U0058 code?

Repair costs can vary depending on the issue. Simple fixes like repairing wiring may cost $50-$150, while replacing a faulty module can cost $500 or more.

10. Can the U0058 code clear itself?

The code may clear temporarily if the issue is intermittent, but the underlying problem will need to be resolved for a permanent fix.

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