B090B - Body Control Module Configuration Error in Ford and Honda Vehicles

Quick Answer

B090B means: B090B signifies a configuration error in the Body Control Module, affecting vehicle electrical systems.

Fix: Check and replace faulty components Cost: $100 - $200 Time: 90-180 minutes

Can I drive with B090B? Address as soon as possible to avoid further electrical issues.

Common Questions

What does B090B mean and how does it affect my car?

The B090B code indicates a configuration error within the Body Control Module (BCM). This can affect various electrical systems such as power locks, windows, and interior lighting. If not addressed, it may lead to malfunctioning features and can potentially drain your battery.

What are the most common causes of B090B and how much does it cost to fix?

Common causes include improper BCM configuration after a battery replacement, software issues, and faulty wiring. Repair costs typically range from $100 for reprogramming to $800 for BCM replacement, depending on the specific problem.

Can I drive my car with B090B or should I stop immediately?

While you might be able to drive with a B090B code, it's advisable to address it promptly. Ignoring this issue can lead to further electrical problems and might compromise safety features in your vehicle.

How can I diagnose B090B myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for DTCs, view live data, and check the BCM's configurations. After retrieving the B090B code, follow the prompts to understand potential issues and monitor the BCM's status.

What vehicles are most commonly affected by B090B?

Commonly affected vehicles include the 2016-2019 Ford Explorer and the 2014-2018 Honda Accord. Many other vehicles with a similar body control module configuration may also experience this issue, especially after electrical repairs.

How can I prevent B090B from happening again?

Regular maintenance, including checking electrical connections, keeping the battery in good condition, and ensuring software updates are applied, can help prevent future occurrences of B090B.

What is B090B?

The Diagnostic Trouble Code (DTC) B090B indicates a configuration error in the Body Control Module (BCM), which is a critical component in modern vehicles. This code primarily appears in popular models such as the 2016-2019 Ford Explorer and the 2014-2018 Honda Accord. The BCM manages various electronic systems, including lighting, door locks, and security features. A B090B error suggests that the BCM is not properly communicating with other modules in the vehicle, or that it lacks the necessary configuration data. This could be due to a software glitch, a recent battery replacement, or an incomplete diagnostic procedure. If ignored, it can lead to malfunctioning electrical systems, increased battery drain, and even reduce the vehicle's safety features. For example, if your vehicle's BCM is not correctly configured, the power door locks may not function, or interior lights could fail to turn off automatically. Addressing this code promptly is essential for maintaining the vehicle's overall performance and safety.

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

Symptoms

Common symptoms when B090B is present:

  • Check engine light stays on constantly, indicating an underlying issue that needs attention.
  • Power windows and locks may not respond or operate intermittently, leading to inconvenience.
  • Interior lights fail to turn off automatically, causing potential battery drain over time.
  • Dashboard warning lights may illuminate unexpectedly, giving a false sense of an emergency.
  • Vehicle security features may malfunction, increasing vulnerability to theft.

Possible Causes

Most common causes of B090B (ordered by frequency):

  1. Improper BCM configuration after battery replacement (60% likelihood) - Often occurs if the battery is disconnected and the BCM loses its settings.
  2. Software glitches or updates in the BCM (20% likelihood) - Occurs when the vehicle's software is outdated or corrupted.
  3. Faulty wiring or connections to the BCM (10% likelihood) - Damaged wires can lead to communication failures between modules.
  4. Less common issues like water intrusion in the BCM (5% likelihood) - Moisture can damage the module, leading to errors.
  5. Rarely, a defective BCM may be the cause (5% likelihood) - Complete BCM failure may require replacement.

B090B Repair Costs

Cost Breakdown by Repair Type

BCM Reprogramming

Reprogramming the Body Control Module to reset its configuration.

  • Total: $100 - $200
  • Success rate: 85%
BCM Replacement

Replacing the BCM if it is found to be defective.

  • Total: $400 - $800
  • Success rate: 90%
Money-Saving Tips for B090B
  • 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 B090B Diagnosis Process

Follow these systematic steps to accurately diagnose B090B. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (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

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

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (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

Step 4: System function test - Verify proper operation after repairs and clear 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

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success (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 Reprogramming Success in 2018 Honda Accord

Vehicle: 2018 Honda Accord, 45,000 miles

Problem: Customer reported that power windows and locks were intermittently malfunctioning.

Diagnosis: Used GeekOBD APP to scan and found B090B code indicating BCM configuration error.

Solution: Reprogrammed the BCM using manufacturer software.

Cost: $150 (labor included)

Result: All electrical features restored to normal operation.

Case Study 2: BCM Replacement on 2017 Ford Explorer

Vehicle: 2017 Ford Explorer, 60,000 miles

Problem: Security system malfunctioning, and interior lights stayed on.

Diagnosis: Diagnostic scan revealed B090B code; BCM tested and deemed defective.

Solution: Replaced the BCM with a new unit and reconfigured it.

Cost: $600 (parts and labor)

Result: Vehicle's electrical systems returned to full functionality.

Diagnose B090B

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: B090B
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes