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P0B73 Chevrolet Code - Hybrid/Electric Vehicle Battery 12 Circuit Performance

Quick Answer

The P0B73 code for Chevrolet indicates a problem with the Hybrid/Electric Vehicle Battery 12 Circuit Performance. Common causes include Faulty 12-volt battery, Corrosion or loose connections in the battery terminals, Aging battery that no longer holds a charge. 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
P0B73 Chevrolet indicates Hybrid/Electric Vehicle Battery 12 Circuit Performance.
Common causes
Common causes include Faulty 12-volt battery, Corrosion or loose connections in the battery terminals, Aging battery that no longer holds a charge.
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 Aug 19, 2024
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Code P0B73 Chevrolet Description

The P0B73 code for Chevrolet indicates a problem with the Hybrid/Electric Vehicle Battery 12 Circuit Performance. This code typically points to issues with the performance of the 12-volt battery in hybrid or electric vehicles. The 12-volt battery in these vehicles plays a crucial role in powering various electrical components, including the lights, radio, and other accessories, as well as supporting the main high-voltage battery. When this circuit's performance is compromised, it can lead to various electrical malfunctions in the vehicle.

OBDII Code P0B73 Chevrolet - Hybrid/Electric Vehicle Battery 12 Circuit Performance
P0B73 Chevrolet Code - Hybrid/Electric Vehicle Battery 12 Circuit Performance

Common Causes of P0B73 Chevrolet

  1. Faulty 12-volt battery
  2. Corrosion or loose connections in the battery terminals
  3. Aging battery that no longer holds a charge
  4. Issues with the charging system
  5. Faulty wiring or electrical components in the circuit

Symptoms of P0B73 Chevrolet

  1. Dimming or flickering lights on the dashboard
  2. Difficulty starting the vehicle
  3. Malfunctioning electrical components such as the radio or power windows
  4. Check engine light illuminated on the dashboard
  5. Reduced fuel efficiency in hybrid vehicles

How to Fix P0B73 Chevrolet

  1. Check the 12-volt battery for any signs of damage or corrosion. Replace the battery if necessary.
  2. Inspect the battery terminals for corrosion or loose connections. Clean the terminals or replace them if needed.
  3. Test the charging system to ensure it is functioning correctly. Replace any faulty components such as the alternator or voltage regulator.
  4. Check the wiring and electrical components in the circuit for any faults. Repair or replace any damaged parts.
  5. Clear the diagnostic trouble codes and perform a test drive to ensure the issue has been resolved.

Cost to Fix P0B73 Chevrolet

The typical repair costs for addressing the P0B73 code can vary depending on the specific diagnosis and the extent of the issue. Generally, replacing a 12-volt battery can cost between $100 to $200, including parts and labor. However, if additional components like the alternator or wiring need to be replaced, the total repair cost may increase. It's essential to factor in the diagnosis time and labor rates at auto repair shops, which can range between $80 to $150 per hour. Additionally, rates may vary based on the vehicle's make and model, location, and the type of shop performing the repairs.

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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 P0B73 Chevrolet Code

1. What does OBDII code P0B73 for Chevrolet Hybrid/Electric Vehicle Battery 12 Circuit Performance indicate?

The code P0B73 indicates that there is a performance issue with the 12-volt circuit in the hybrid or electric vehicle battery system.

2. What are the common symptoms of OBDII code P0B73 in a Chevrolet hybrid or electric vehicle?

Common symptoms include difficulty starting the vehicle, dimming interior lights, erratic behavior of electronic components, and potential issues with the vehicle's overall performance.

3. What are some possible causes of OBDII code P0B73 in a Chevrolet hybrid or electric vehicle?

Possible causes include a faulty 12-volt battery, issues with the battery management system, wiring problems, or a malfunctioning battery control module.

4. How can I diagnose the underlying issue causing OBDII code P0B73 in my Chevrolet hybrid or electric vehicle?

Diagnosis typically involves checking the 12-volt battery for proper voltage, inspecting the wiring for any damage or loose connections, and using a diagnostic scanner to read additional fault codes related to the battery system.

5. Can I still drive my Chevrolet hybrid or electric vehicle with OBDII code P0B73 present?

It is not recommended to drive the vehicle for an extended period with this code present, as it can lead to further electrical system issues and potentially leave you stranded.

6. How can I reset OBDII code P0B73 in my Chevrolet hybrid or electric vehicle?

Resetting the code involves using an OBDII scanner to clear the code after addressing the underlying issue causing the fault. Simply clearing the code without fixing the problem will likely result in it reappearing.

7. What are some repair tips for addressing OBDII code P0B73 in a Chevrolet hybrid or electric vehicle?

Repair tips may include replacing the 12-volt battery if it is faulty, checking and repairing any damaged wiring, ensuring proper connections, and consulting a professional technician for further diagnosis if needed.

8. Is OBDII code P0B73 specific to Chevrolet hybrid and electric vehicles, or can it occur in other makes and models?

While this specific code is related to Chevrolet vehicles, similar performance issues with the 12-volt battery circuit can occur in other hybrid or electric vehicles as well.

9. How urgent is it to address OBDII code P0B73 in my Chevrolet hybrid or electric vehicle?

It is recommended to address this code promptly to prevent further electrical system issues and potential breakdowns. Ignoring the issue can lead to more expensive repairs down the line.

10. Can I prevent OBDII code P0B73 from occurring in my Chevrolet hybrid or electric vehicle?

Regular maintenance, such as checking the 12-volt battery's health, inspecting wiring for damage, and addressing any warning signs promptly, can help prevent this code from appearing in your Chevrolet hybrid or electric vehicle.

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