Quick Answer
B107B means: B107B indicates a fault in the body control module or its circuits.
Can I drive with B107B? Immediate attention is recommended to prevent further electrical issues.
Common Questions
What does B107B mean and how does it affect my car?
The B107B code indicates an issue with your vehicle's body control module, which is responsible for managing various electrical functions. This could affect your lights, door locks, and security systems, leading to inconvenience and potential safety concerns.
What are the most common causes of B107B and how much does it cost to fix?
Common causes include a defective BCM, damaged wiring, and software glitches. Repair costs can range from $100 for wiring fixes to $800 for BCM replacement. It's essential to diagnose the specific cause accurately.
Can I drive my car with B107B or should I stop immediately?
While you may be able to drive your vehicle, it's advisable to address the B107B code as soon as possible. Ignoring it could lead to further electrical issues or safety concerns.
How can I diagnose B107B myself using GeekOBD APP?
Using the GeekOBD APP, you can perform a full OBD2 scan to retrieve the B107B code along with any related codes. Check the freeze frame data for specific conditions when the code was triggered, which can guide your troubleshooting efforts.
What vehicles are most commonly affected by B107B?
The code is frequently reported in vehicles like the 2015-2018 Honda Accord and Toyota Camry. Owners of these models should be vigilant about electrical issues and consider periodic diagnostics.
How can I prevent B107B from happening again?
Regular maintenance of your vehicle's electrical systems, including routine checks of the BCM and wiring, can help prevent issues. Keeping the vehicle dry and protected from corrosion is also essential.
What is B107B?
The diagnostic trouble code (DTC) B107B is a specific code that indicates a problem with the vehicle's body control module (BCM) or its associated circuits. This code is commonly found in various makes and models, particularly in the 2015-2018 Honda Accord and Toyota Camry. When the BCM detects an inconsistency or malfunction in its communication with other components, it triggers the B107B code. This could manifest as issues with various systems controlled by the BCM, such as interior and exterior lights, door locks, or even the vehicle's alarm system. In essence, the BCM is responsible for managing numerous electronic functions within the vehicle, and a fault in this area can lead to multiple symptoms, affecting the overall functionality and convenience features of the vehicle. If left unaddressed, the underlying issue could worsen, potentially leading to more significant electrical problems or system failures. It's crucial to diagnose and rectify the problem promptly to ensure your vehicle operates as intended and to avoid further complications down the line.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B107B is present:
- Check engine light illuminates and remains on, indicating a persistent issue with the vehicle's electrical systems.
- Interior lights flicker or do not operate correctly, affecting visibility and convenience during night driving.
- Power door locks fail to respond, making it difficult to secure the vehicle and access its interior.
- Vehicle alarm system malfunctions, leading to potential security vulnerabilities.
- Dashboard warning lights may appear intermittently, indicating broader electrical system issues.
Possible Causes
Most common causes of B107B (ordered by frequency):
- The most common cause is a defective body control module itself, which occurs in about 60% of cases. This may result from age, water exposure, or manufacturing defects.
- A second cause could be damaged wiring or poor connections in the BCM circuits, accounting for about 25% of occurrences. Corrosion or frayed wires can disrupt communication.
- The third cause might be software glitches in the BCM, which can be resolved through updates or reprogramming, making up about 10% of cases. Regular software checks can help prevent this.
- Less commonly, sensor failures that communicate with the BCM may trigger this code, usually involving systems like the keyless entry or lighting.
- Rarely, issues with the vehicle's ignition switch can lead to incorrect signals being sent to the BCM, triggering a B107B code.
B107B Repair Costs
Cost Breakdown by Repair Type
BCM Replacement
Replacing the body control module with a new or refurbished unit.
- Total: $300 - $800
- Success rate: 90%
Wiring Repair
Repairing or replacing damaged wiring or connections leading to the BCM.
- Total: $100 - $300
- Success rate: 85%
Money-Saving Tips for B107B
- 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 B107B Diagnosis Process
Follow these systematic steps to accurately diagnose B107B. 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 (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (5-10 minutes).
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).
Step 3: Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the BCM and its connections (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the BCM and its connections (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes reappear (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes reappear (15-20 minutes).
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 a 2017 Honda Accord
Vehicle: 2017 Honda Accord with 60,000 miles
Problem: Customer reported intermittent failure of the power door locks and flickering interior lights.
Diagnosis: A diagnostic scan revealed the B107B code, indicating a problem with the BCM. Further testing confirmed the module was defective.
Solution: Replaced the body control module, ensuring all connections were secure and free from corrosion.
Cost: $600 (including parts and labor)
Result: Post-replacement, all electrical systems functioned properly, and the customer reported no further issues.
Case Study 2: Wiring Repair on a 2016 Toyota Camry
Vehicle: 2016 Toyota Camry with 75,000 miles
Problem: Customer experienced failure of dashboard lights and alarm system malfunctions.
Diagnosis: Diagnosis revealed the B107B code due to damaged wiring harness connected to the BCM.
Solution: Repaired the damaged wiring and secured all connections to prevent future issues.
Cost: $150 (specific cost breakdown for parts and labor)
Result: After repairs, all systems were verified and returned to normal operation, improving the vehicle's reliability.