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Engine-Codes – Generic – P058A

P058A Code - Battery Monitor Module Performance

Quick Answer

The P058A diagnostic trouble code (DTC) indicates an issue with the Battery Monitor Module's performance. Common causes include Faulty Battery Monitor Module, Weak or failing battery, Poor electrical connections or corroded terminals. 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
P058A indicates Battery Monitor Module Performance.
Common causes
Common causes include Faulty Battery Monitor Module, Weak or failing battery, Poor electrical connections or corroded terminals.
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 06, 2024
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Code P058A Description

The P058A diagnostic trouble code (DTC) indicates an issue with the Battery Monitor Module's performance. The Battery Monitor Module is responsible for monitoring the battery's condition, voltage, and charging system performance. When this code is triggered, it typically means that the module is detecting a deviation from its expected parameters, indicating a potential issue with the battery or charging system. This can lead to various electrical problems in the vehicle, affecting systems such as the starter motor, lights, and other electronic components.

OBDII Code P058A - Battery Monitor Module Performance
P058A Code - Battery Monitor Module Performance

Common Causes of P058A

  1. Faulty Battery Monitor Module
  2. Weak or failing battery
  3. Poor electrical connections or corroded terminals
  4. Malfunctioning alternator
  5. Electrical system issues such as a short circuit or wiring damage

Symptoms of P058A

  1. Check engine light illuminated on the dashboard
  2. Battery warning light on the instrument cluster
  3. Slow cranking or difficulty starting the engine
  4. Electrical issues such as dimming lights or erratic behavior
  5. Inconsistent battery voltage readings

How to Fix P058A

  1. Begin by performing a thorough inspection of the battery, connections, and charging system to identify any obvious issues.
  2. Test the battery's voltage and condition using a multimeter to determine if it needs to be replaced.
  3. Check the alternator's output voltage to ensure it is charging the battery properly.
  4. If no issues are found with the battery or alternator, the Battery Monitor Module may need to be replaced.
  5. Clear the DTC and reset the system to see if the issue has been resolved.

Cost to Fix P058A

The cost of repairing a P058A DTC can vary depending on the specific cause of the issue. Replacing a faulty Battery Monitor Module can range from $200 to $500, including parts and labor. If the battery or alternator also needs to be replaced, the total repair cost could be higher. It's recommended to consult with a professional mechanic to diagnose the exact problem and receive an accurate cost estimate for the repair.

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Code P058A Information for Specific Makes

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 P058A Code

1. What are the common symptoms of OBDII code P058A (Battery Monitor Module Performance)?

- Common symptoms include a check engine light, poor fuel efficiency, engine starting issues, and problems with the electrical system.

2. What are the possible causes of OBDII code P058A?

- The code P058A can be triggered by a faulty battery monitor module, issues with the battery sensor, wiring problems, or a drained/faulty battery.

3. How can I diagnose the OBDII code P058A?

- Diagnosis typically involves using a scan tool to retrieve the specific fault code, inspecting the battery monitor module and sensor, checking battery voltage, and ensuring proper wiring connections.

4. Can I still drive my vehicle with the OBDII code P058A present?

- It is not recommended to drive with the code P058A present, as it can lead to further damage to the vehicle's electrical system or battery.

5. How can I repair OBDII code P058A?

- Repair options may include replacing the battery monitor module, repairing or replacing the battery sensor, fixing wiring issues, or replacing the battery if it is faulty.

6. Will the OBDII code P058A clear on its own?

- The code may clear on its own if the underlying issue is temporary, but it is advisable to diagnose and repair the problem to prevent further issues.

7. Can a DIYer fix OBDII code P058A at home?

- Depending on the skill level and tools available, some DIYers may be able to address the issue by replacing the battery monitor module, sensor, or performing basic wiring repairs.

8. Are there any specific vehicles prone to experiencing OBDII code P058A?

- While this code can occur in any vehicle with an OBDII system, certain models or makes may have a higher incidence rate due to design or component issues.

9. How much does it typically cost to repair OBDII code P058A at a mechanic or dealership?

- The cost of repair can vary based on the specific issue, parts needed, and labor rates, but it may range from a few hundred to over a thousand dollars at a mechanic or dealership.

10. What should I do if I continue to experience OBDII code P058A after attempting repairs?

- If the code persists after attempted repairs, it is advisable to seek professional help from a qualified mechanic or technician to diagnose and resolve the issue accurately.

Discuss the causes and fixes for P058A OBDII Code

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  • This code showed up on my 2019 GMC, with only 2600 miles on it. I cleaned the negative battery terminal and clamp and sprayed with anti-corrosive. Code cleared after clamp was removed and reinstalled. Had noticed that charger (used between sporadic trips) had been taking too long and working too hard to charge. This was also fixed. Start with the simplest fix.....

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  • Thank you for sharing!!

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