C0B87 - Understanding the Battery Management System Malfunction in 2016-2021 Chevrolet Volt and Other Models

Quick Answer

C0B87 means: C0B87 indicates a malfunction in the Battery Management System, affecting battery voltage monitoring.

Fix: Check and replace faulty components Cost: $300 - $800 Time: 90-180 minutes

Can I drive with C0B87? Immediate attention is recommended to prevent further battery damage.

Common Questions

What does C0B87 mean and how does it affect my car?

C0B87 means there’s a problem with your car's Battery Management System, specifically related to voltage monitoring. This can lead to decreased battery performance and range, making it crucial to diagnose and fix the issue quickly to maintain optimal function.

What are the most common causes of C0B87 and how much does it cost to fix?

Common causes of C0B87 include failing battery cells, damaged wiring, and software glitches. Repair costs can vary widely, from $50 for a simple software update to $800 for battery cell replacement, depending on the specific issue.

Can I drive my car with C0B87 or should I stop immediately?

While you may still drive your vehicle, it’s not advisable as it can lead to further battery damage and potentially leave you stranded. It's best to address the issue promptly.

How can I diagnose C0B87 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for diagnostic trouble codes, view freeze frame data, and monitor battery voltage. This will help you understand the fault context and any related issues.

What vehicles are most commonly affected by C0B87?

While C0B87 can appear in various models, it is frequently seen in the 2016-2021 Chevrolet Volt and similar hybrid vehicles that rely heavily on battery management systems.

How can I prevent C0B87 from happening again?

Regular maintenance, including periodic battery checks and software updates, can help prevent C0B87. Keeping the battery clean and ensuring good connections will also aid in avoiding future issues.

What is C0B87?

The Diagnostic Trouble Code (DTC) C0B87 refers to a malfunction within the Battery Management System (BMS) of your vehicle. This code is specifically indicative of an issue related to the battery pack's voltage monitoring. A properly functioning BMS is crucial for ensuring the battery operates efficiently, maintains its charge, and prolongs its life. When this code appears, it typically signifies that the BMS has detected an abnormal voltage condition that may arise from various factors such as battery cell degradation, wiring issues, or faults in the battery management software. If left unaddressed, a C0B87 code can lead to reduced battery performance, affecting your vehicle's overall efficiency and range. For instance, owners of models like the 2016-2021 Chevrolet Volt may notice a decrease in electric driving range or experience performance limitations. The BMS is designed to protect the battery from overcharging or deep discharging, so it’s imperative to diagnose and fix the underlying issue promptly. Ignoring this code can not only lead to higher repair costs down the line but might also impair the vehicle's ability to operate on electric power efficiently.

System: C - Chassis (ABS, Steering, Suspension)

Symptoms

Common symptoms when C0B87 is present:

  • The battery warning light on the dashboard remains illuminated, indicating a potential issue with the battery system.
  • Drivers may experience a significant decrease in electric driving range, affecting daily commutes or long trips.
  • Sudden loss of power during acceleration, which can lead to unsafe driving conditions, especially in hybrid models.
  • Unusual noises from the battery compartment, which could indicate physical damage or malfunctioning components.
  • Frequent system alerts or notifications from the vehicle’s onboard computer regarding battery health.

Possible Causes

Most common causes of C0B87 (ordered by frequency):

  1. The most common cause of C0B87 is a failing battery cell, occurring in approximately 60% of diagnosed cases. This happens when one or more cells within the battery pack degrade, leading to inconsistent voltage readings.
  2. Another possible cause is damaged wiring or connectors, which can disrupt the signals between the battery and the BMS, accounting for about 25% of cases. Poor connections can lead to erroneous voltage readings.
  3. Software glitches in the Battery Management System can also trigger this code, though this is less common. Regular software updates and diagnostics can help prevent such issues from occurring.
  4. Less frequently, a malfunctioning battery control module may be the culprit, which requires specialized diagnostics and can be costly to replace.
  5. Finally, environmental factors such as extreme temperatures can affect battery performance and potentially trigger the C0B87 code.

C0B87 Repair Costs

Cost Breakdown by Repair Type

Battery Cell Replacement

Replacing one or more failed battery cells to restore function.

  • Total: $300 - $800
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring or connectors.

  • Total: $100 - $300
  • Success rate: 90%
Battery Management Software Update

Updating the battery management software to fix glitches.

  • Total: $50 - $150
  • Success rate: 70%
Money-Saving Tips for C0B87
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional C0B87 Diagnosis Process

Follow these systematic steps to accurately diagnose C0B87. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion on battery terminals (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion on battery terminals (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to check the voltage of the battery cells and ensure they are functioning within their specified range (20-30 minutes)

Step 3: Component testing - Use a multimeter to check the voltage of the battery cells and ensure they are functioning within their specified range (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After making repairs, verify proper operation of the battery management system and clear codes using the GeekOBD APP (10-15 minutes)

Step 4: System function test - After making repairs, verify proper operation of the battery management system and clear codes using the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the C0B87 code doesn't reappear (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the C0B87 code doesn't reappear (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: 2018 Chevrolet Volt Battery Cell Replacement

Vehicle: 2018 Chevrolet Volt, 50,000 miles

Problem: The vehicle displayed a persistent battery warning light and reduced electric driving range.

Diagnosis: After an OBD2 scan revealed the C0B87 code, technicians performed a visual inspection and found one of the battery cells was underperforming.

Solution: The faulty battery cell was replaced, and the BMS was reset. The vehicle was then road-tested to ensure proper function.

Cost: $600 (including parts and labor)

Result: The warning light was cleared, and the vehicle’s electric range returned to normal.

Case Study 2: 2019 Chevrolet Bolt EV Wiring Repair

Vehicle: 2019 Chevrolet Bolt EV, 30,000 miles

Problem: Customer reported unexpected battery discharge and the C0B87 code appeared during diagnostics.

Diagnosis: Inspecting the wiring harness revealed frayed wires causing intermittent connections.

Solution: The damaged wiring was repaired, and after conducting a system test, the BMS functioned normally.

Cost: $150 (for parts and labor)

Result: The issue was resolved, and the vehicle performed as expected without any warning lights.

Diagnose C0B87

Use GeekOBD APP for professional diagnosis!

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  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: C0B87
System: Chassis (ABS, Steering, Suspension)
Severity: HIGH
Category: Chassis Codes