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Engine-Codes – Generic – P0B77

P0B77 Code - Hybrid/Electric Vehicle Battery 13 Circuit

Quick Answer

The diagnostic trouble code P0B77 indicates a problem with the Hybrid/Electric Vehicle Battery 13 Circuit. Common causes include Faulty battery cell, Damaged wiring harness, Loose connection. 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
P0B77 indicates Hybrid/Electric Vehicle Battery 13 Circuit.
Common causes
Common causes include Faulty battery cell, Damaged wiring harness, Loose connection.
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 07, 2024
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Code P0B77 Description

The diagnostic trouble code P0B77 indicates a problem with the Hybrid/Electric Vehicle Battery 13 Circuit. In hybrid and electric vehicles, the battery plays a crucial role in providing power to the electric motor and other electrical components of the vehicle. The Battery 13 Circuit specifically refers to a specific circuit within the battery system that is experiencing an issue.

OBDII Code P0B77 - Hybrid/Electric Vehicle Battery 13 Circuit
P0B77 Code - Hybrid/Electric Vehicle Battery 13 Circuit

Common Causes of P0B77

  1. Faulty battery cell
  2. Damaged wiring harness
  3. Loose connection
  4. Malfunctioning battery management system

Symptoms of P0B77

  1. Reduced acceleration or power loss
  2. Decreased fuel efficiency
  3. Malfunctioning electrical components (e.g., power windows, air conditioning)
  4. Dashboard warning light illuminated

How to Fix P0B77

  1. Diagnose the issue using a diagnostic scan tool to pinpoint the exact source of the problem.
  2. Inspect the Hybrid/Electric Vehicle Battery 13 Circuit for any visible damage or loose connections.
  3. Test the battery cells to identify any faulty cells that may be causing the issue.
  4. Repair or replace any damaged wiring harnesses or components within the battery system.
  5. Clear the diagnostic trouble code and test drive the vehicle to ensure the issue has been resolved.

Cost to Fix P0B77

The cost of repairing a Hybrid/Electric Vehicle Battery 13 Circuit issue can vary depending on the specific cause of the problem and the extent of the damage. In general, repairs related to battery circuits can range from $200 to $1000 or more, including parts and labor. It's important to note that the cost may be higher if the battery itself needs to be replaced. Additionally, labor rates at auto repair shops can vary, so it's recommended to obtain quotes from multiple shops to compare prices and ensure a fair estimate.

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Code P0B77 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.

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