B08AF - Understanding the Body Control Module Error in 2015-2020 Ford F-150 and Other Models

Quick Answer

B08AF means: B08AF indicates a communication error within the Body Control Module.

Fix: Check and replace faulty components Cost: $300 - $600 Time: 90-180 minutes

Can I drive with B08AF? Immediate attention is recommended to prevent further electrical issues.

Common Questions

What does B08AF mean and how does it affect my car?

The B08AF code indicates a problem with the Body Control Module (BCM), which is responsible for controlling various electronic components in your vehicle. If this code is present, you may experience issues with power windows, door locks, and other electrical systems, affecting your vehicle's functionality and safety.

What are the most common causes of B08AF and how much does it cost to fix?

Common causes of B08AF include a faulty BCM, poor electrical connections, and software issues. Repair costs can range from $100 for simple electrical repairs to $600 for BCM replacement, depending on the specific issue and vehicle model.

Can I drive my car with B08AF or should I stop immediately?

While it's possible to drive with the B08AF code, it's not advisable. Ignoring this issue could lead to further electrical failures, potentially leaving you stranded. It's best to have the vehicle diagnosed and repaired as soon as possible.

How can I diagnose B08AF myself using GeekOBD APP?

To diagnose B08AF using the GeekOBD APP, connect the device to your vehicle’s OBD2 port, run a full scan, and check for the B08AF code. Review the freeze frame data for context and use the app's diagnostic features to explore any related codes or electrical issues.

What vehicles are most commonly affected by B08AF?

The B08AF code is often reported in models like the 2015-2020 Ford F-150 and other Ford vehicles that utilize a Body Control Module. Checking for manufacturer recalls or Technical Service Bulletins (TSBs) can provide further insights into this issue.

How can I prevent B08AF from happening again?

To prevent B08AF from recurring, ensure regular maintenance of your vehicle's electrical systems. This includes checking for loose connections, avoiding aftermarket modifications that could interfere with the BCM, and keeping software updated through dealership services.

What is B08AF?

The diagnostic trouble code (DTC) B08AF pertains to an issue with the Body Control Module (BCM), commonly found in various Ford models, including the 2015-2020 Ford F-150. This code indicates that the BCM is unable to communicate properly with the vehicle's electronic components, leading to potential malfunctions in systems such as lighting, power windows, and door locks. When the vehicle's computer detects an inconsistency or malfunction in the BCM, it triggers the B08AF code, which can signal either a software issue or a hardware failure. Real-world implications of this code can manifest as erratic behavior of electronic components, including the failure of keyless entry systems or malfunctioning interior lights. In some cases, it might also affect vehicle security features, potentially leaving your vehicle vulnerable. Ignoring this code can lead to further complications, including more extensive electrical system failures, which can result in costly repairs. Regular diagnostic checks using tools like the GeekOBD APP can help identify this and other issues early on, allowing for timely repairs and peace of mind.

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

Symptoms

Common symptoms when B08AF is present:

  • The warning lights on your dashboard flicker or remain illuminated unexpectedly, indicating a potential BCM malfunction.
  • Power windows and door locks may become unresponsive, causing inconvenience when trying to access your vehicle.
  • Interior lights may not turn on or off properly, leading to confusion when entering or exiting the vehicle.
  • The keyless entry system may fail intermittently, leaving you unable to unlock or start your vehicle without manual intervention.
  • Unexpected system resets or failures in other electronic features, like the radio or navigation system, may occur.

Possible Causes

Most common causes of B08AF (ordered by frequency):

  1. The most common cause of the B08AF code is a faulty Body Control Module, with a likelihood of occurrence around 60%. This could be due to age, corrosion, or manufacturing defects.
  2. Another cause could be poor electrical connections, which can lead to communication errors. This often occurs when connectors are loose or corroded, affecting the BCM's performance.
  3. Software issues or outdated firmware can also trigger the B08AF code. Regular updates and maintenance can help prevent these issues.
  4. Less common but serious causes include wiring harness damage due to wear and tear or environmental factors, which can significantly affect the BCM's communications.
  5. A rare cause may involve aftermarket modifications or installations that interfere with the vehicle's electrical systems, leading to unexpected DTC codes.

B08AF Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the faulty Body Control Module with a new or refurbished unit.

  • Total: $300 - $600
  • Success rate: 85%
Electrical Connection Repair

Repairing or replacing damaged wiring or connectors that affect BCM communication.

  • Total: $100 - $300
  • Success rate: 75%
Money-Saving Tips for B08AF
  • 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 B08AF Diagnosis Process

Follow these systematic steps to accurately diagnose B08AF. 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, 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).

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 to ensure that the issue has been resolved (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes to ensure that the issue has been resolved (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 and check for any recurrence of the code (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and check for any recurrence of the code (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 a 2018 Ford F-150

Vehicle: 2018 Ford F-150, 45,000 miles

Problem: Customer reported that their keyless entry system failed intermittently, and dashboard lights flickered.

Diagnosis: A full diagnostic scan revealed the B08AF code, indicating an issue with the Body Control Module. Visual inspection showed signs of corrosion in the wiring harness.

Solution: The faulty Body Control Module was replaced, and the damaged wiring was repaired. The system was tested to ensure proper functionality.

Cost: $500 (including parts and labor for BCM replacement and wiring repair)

Result: The vehicle's electronic systems returned to normal operation, with no further issues reported after the repair.

Case Study 2: Electrical Connection Repair on a 2016 Ford Explorer

Vehicle: 2016 Ford Explorer, 60,000 miles

Problem: Customer experienced issues with power windows and interior lights not functioning.

Diagnosis: Diagnostic testing revealed the B08AF code. Inspection of the wiring showed a loose connector to the BCM.

Solution: The electrical connector was tightened and secured, and the vehicle was tested to ensure all systems were operational.

Cost: $150 (for labor and minor electrical repairs)

Result: All electronic functions were restored, and the customer reported satisfaction with the quick and effective resolution.

Diagnose B08AF

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: B08AF
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes