B086E - Understanding the Body Control Module Malfunction in 2016-2020 Chevrolet Malibu and Other Models

Quick Answer

B086E means: B086E refers to a Body Control Module malfunction, affecting electrical components in your vehicle.

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

Can I drive with B086E? This code should be addressed as soon as possible to prevent further electrical failures.

Common Questions

What does B086E mean and how does it affect my car?

The B086E code indicates a malfunction in the Body Control Module (BCM), which controls various electronic systems in your vehicle. This may lead to issues with the dashboard lights, power windows, and other electrical functionalities, impacting your overall driving experience.

What are the most common causes of B086E and how much does it cost to fix?

Common causes include a faulty BCM, damaged wiring, or corrosion on connectors. Repair costs can vary, ranging from $150 for wiring repairs to $800 for BCM replacement, depending on the severity of the issue.

Can I drive my car with B086E or should I stop immediately?

While you may be able to drive your vehicle with the B086E code, it is advised to address the issue promptly. Ignoring it could lead to further electrical problems, potentially compromising your safety.

How can I diagnose B086E myself using GeekOBD APP?

Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the B086E code and any associated trouble codes. Examine freeze-frame data to understand the context of the fault and follow up with visual inspections of wiring and the BCM.

What vehicles are most commonly affected by B086E?

This code is frequently seen in models like the 2016-2020 Chevrolet Malibu, but other vehicles from manufacturers like Ford and GMC may also experience similar issues. Always check for recalls or Technical Service Bulletins (TSBs) related to your specific model.

How can I prevent B086E from happening again?

Regular maintenance, including inspecting wiring and connectors for corrosion, can help prevent the B086E code from reoccurring. Keeping your vehicle's software up to date is also crucial.

What is B086E?

The Diagnostic Trouble Code (DTC) B086E indicates a malfunction within the Body Control Module (BCM) of your vehicle. This code typically arises when the BCM detects an unexpected input or output from its integrated circuits, often linked to various vehicle functions such as dashboard lights, power windows, or door locks. The BCM acts as the central nervous system for many electronic components in the car, so a fault here can lead to a range of symptoms including failure of these components to operate correctly. In practical terms, if you're driving a 2016-2020 Chevrolet Malibu, you may notice erratic behavior from your vehicle's electrical features, which can be frustrating and potentially unsafe. If left unaddressed, this issue may escalate, leading to more severe electrical problems or even complete failure of the BCM. It's essential to diagnose and repair the root cause of the B086E code promptly to ensure your vehicle's systems operate smoothly and reliably.

System: B - Body (Airbags, Lighting, Security, Climate Control)

Symptoms

Common symptoms when B086E is present:

  • The dashboard warning lights, including the check engine light, may remain illuminated, indicating a malfunction.
  • Power windows and door locks may become unresponsive, affecting your ability to operate these essential features.
  • You might notice flickering or dimming of interior lights when the vehicle is in operation, suggesting electrical instability.
  • In some cases, the vehicle might experience intermittent starting issues, making it difficult to get the car going.
  • Strange noises from the vehicle's electronic systems, such as clicking or buzzing, may accompany the B086E code.

Possible Causes

Most common causes of B086E (ordered by frequency):

  1. The most common cause of the B086E code is a faulty Body Control Module itself, which accounts for approximately 60% of cases. This can be due to internal circuit failure or software glitches.
  2. Another possible cause is damaged wiring or connectors to the BCM, which can lead to poor electrical contacts. This issue is generally less frequent but can be easily inspected during diagnostics.
  3. Corrosion on connectors or terminals can also lead to the B086E code, as it disrupts the electrical flow. Regular maintenance and cleaning can help prevent this.
  4. Less commonly, a malfunctioning sensor that interfaces with the BCM may trigger this code, causing erratic behavior of vehicle systems.
  5. In rare cases, software updates or recalls from the manufacturer may need to be applied if the BCM has known issues.

B086E Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the Body Control Module is often necessary when diagnosing a B086E code, especially if the module is confirmed faulty.

  • Total: $300 - $800
  • Success rate: 80%
Wiring Repair

Repairing damaged wiring or connectors can also resolve the B086E code, usually at a lower cost than module replacement.

  • Total: $150 - $300
  • Success rate: 70%
Software Update

In some cases, a software update from the manufacturer may resolve the issue without any hardware changes.

  • Total: $100 - $200
  • Success rate: 50%
Money-Saving Tips for B086E
  • 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 B086E Diagnosis Process

Follow these systematic steps to accurately diagnose B086E. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Start with an initial visual inspection to check for any obvious signs of damaged wiring, loose connections, or corrosion around the Body Control Module (5-10 minutes)

Step 1: Start with an initial visual inspection to check for any obvious signs of damaged wiring, loose connections, or corrosion around the Body Control Module (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: Use the GeekOBD APP to conduct an OBD2 scan, retrieving all trouble codes and freeze-frame data that may provide context to the B086E code (10-15 minutes)

Step 2: Use the GeekOBD APP to conduct an OBD2 scan, retrieving all trouble codes and freeze-frame data that may provide context to the B086E code (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: Perform component testing on suspected faulty areas, using a multimeter to check circuit continuity and voltage levels (20-30 minutes)

Step 3: Perform component testing on suspected faulty areas, using a multimeter to check circuit continuity and voltage levels (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: Conduct a system function test to verify that the BCM and related components operate correctly after any repairs and clear the fault codes (10-15 minutes)

Step 4: Conduct a system function test to verify that the BCM and related components operate correctly after any repairs and clear the fault codes (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: Execute a road test under varied conditions to ensure that the repair was effective and that the B086E code does not reappear (15-20 minutes)

Step 5: Execute a road test under varied conditions to ensure that the repair was effective and that the B086E code does not 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: BCM Replacement on 2018 Chevrolet Malibu

Vehicle: 2018 Chevrolet Malibu with 45,000 miles

Problem: Customer reported power windows and dashboard lights were malfunctioning.

Diagnosis: OBD2 scan revealed B086E code along with several other BCM-related codes. Visual inspection showed corrosion on connectors.

Solution: Replaced the Body Control Module and cleaned all electrical connections.

Cost: $650 (parts: $500 for BCM, $150 for labor)

Result: All electrical systems functioned correctly post-repair, with no reoccurrence of B086E.

Case Study 2: Wiring Repair on 2017 Ford Fusion

Vehicle: 2017 Ford Fusion with 60,000 miles

Problem: Customer experienced intermittent starting issues and dashboard light malfunctions.

Diagnosis: B086E code was retrieved; further inspection revealed frayed wiring near the BCM.

Solution: Repaired damaged wiring and reconnected all affected terminals.

Cost: $200 (parts: $50 for connectors, $150 for labor)

Result: Vehicle started reliably post-repair, and dashboard lights operated normally.

Diagnose B086E

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B086E
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes