B103F - Understanding Body Control Module Malfunction in 2015-2020 Ford Explorer and Other Models

Quick Answer

B103F means: B103F indicates a malfunction in the body control module related to electrical systems.

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

Can I drive with B103F? Immediate diagnosis and repair are recommended to avoid further complications.

Common Questions

What does B103F mean and how does it affect my car?

B103F indicates a malfunction in the body control module. This can disrupt various electrical systems in your vehicle, making functions like windows, lights, and locks unreliable. Addressing this code quickly is essential to maintain vehicle safety and functionality.

What are the most common causes of B103F and how much does it cost to fix?

Common causes include faulty wiring, malfunctioning sensors, and software glitches. Repair costs can range from $100 for wiring repairs to $800 for a complete BCM replacement, depending on the specific issue.

Can I drive my car with B103F or should I stop immediately?

While you may still drive your vehicle, it's advisable to address the B103F code as soon as possible. Ignoring it can lead to more serious electrical issues and safety concerns.

How can I diagnose B103F myself using GeekOBD APP?

Using the GeekOBD APP, you can scan your vehicle's OBD2 system to retrieve diagnostic trouble codes. Look for B103F and any additional codes, which can help pinpoint the issue with the BCM.

What vehicles are most commonly affected by B103F?

B103F is commonly seen in models like the 2015-2020 Ford Explorer, but similar issues can affect other vehicles from Ford and other manufacturers during the same production years.

How can I prevent B103F from happening again?

Regular maintenance checks, ensuring electrical connections are secure, and keeping the vehicle free from water intrusion can help prevent B103F from recurring.

What is B103F?

The B103F diagnostic trouble code (DTC) indicates a fault in the body control module (BCM) of your vehicle, which is crucial for various electronic systems. This code can arise due to issues such as faulty wiring, malfunctioning sensors, or even software glitches within the BCM itself. The body control module is responsible for managing numerous functions, including lighting, door locks, and sometimes even the security system. When B103F is triggered, you may notice that certain features may not operate as intended, or you might experience intermittent electrical problems. For instance, windows may not roll down, headlights might flicker, or the vehicle may not start reliably. Ignoring this code can lead to more severe electrical issues and potentially compromise safety features. It's essential to address this code promptly to ensure that all systems remain functional and to avoid more costly repairs down the road. The B103F code is most commonly seen in vehicles like the Ford Explorer, but other makes and models from the same production years may also exhibit this fault. Regular diagnostics and maintenance can help prevent this code from appearing, and tools like the GeekOBD APP can assist you in identifying the specific issues related to the BCM.

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

Symptoms

Common symptoms when B103F is present:

  • Check engine light remains illuminated, indicating a persistent issue.
  • Windows may not operate correctly, causing inconvenience and safety concerns.
  • Headlights flicker or fail to illuminate properly, potentially affecting night driving safety.
  • Door locks may malfunction, leading to difficulties in securing the vehicle.
  • The vehicle may experience intermittent starting issues, affecting reliability.

Possible Causes

Most common causes of B103F (ordered by frequency):

  1. Faulty wiring (60% likelihood) - Damaged or corroded wires can disrupt communication between the BCM and other components.
  2. Malfunctioning sensors (25% likelihood) - Sensors that report faulty data to the BCM can cause errors to trigger.
  3. Software glitch (10% likelihood) - Outdated or corrupted BCM software may lead to operational issues.
  4. Water intrusion (3% likelihood) - Moisture can seep into the BCM, causing electrical shorts and failures.
  5. Physical damage (2% likelihood) - Accidental impacts can damage the BCM, leading to malfunctions.

B103F Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the faulty body control module with a new or refurbished unit.

  • Total: $300 - $800
  • Success rate: 90%
Wiring Repair

Repairing or replacing damaged wiring associated with the BCM.

  • Total: $100 - $300
  • Success rate: 80%
Sensor Replacement

Replacing malfunctioning sensors that interact with the BCM.

  • Total: $50 - $150 per sensor
  • Success rate: 85%
Money-Saving Tips for B103F
  • 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 B103F Diagnosis Process

Follow these systematic steps to accurately diagnose B103F. 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).

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 or specific diagnostic tools to test suspected components (20-30 minutes)

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: System function test - Verify proper operation after repairs and clear codes (10-15 minutes)

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: Road test verification - Drive the vehicle under various conditions to confirm repair success (15-20 minutes)

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 Replacement on 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 45,000 miles

Problem: Customer reported that windows were unresponsive and check engine light was on.

Diagnosis: Diagnosed B103F and performed an OBD2 scan revealing BCM issues.

Solution: Replaced the body control module and updated the software.

Cost: $600 (includes $400 for BCM, $200 for labor)

Result: All functions restored, customer reported satisfaction with repairs.

Case Study 2: Wiring Repair on 2017 Chevrolet Equinox

Vehicle: 2017 Chevrolet Equinox, 50,000 miles

Problem: Customer experienced intermittent lock issues and flickering headlights.

Diagnosis: Found damaged wiring causing B103F code.

Solution: Repaired wiring and secured connections.

Cost: $200 (includes $150 for wiring repair, $50 for labor)

Result: Functionality restored, no further issues reported.

Diagnose B103F

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: B103F
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes