Quick Answer
B0F79 means: B0F79 signifies a communication error between the body control module and other vehicle control units.
Can I drive with B0F79? Immediate attention is recommended to avoid further electrical issues.
Common Questions
What does B0F79 mean and how does it affect my car?
B0F79 indicates a communication error between the body control module and other control units. This can lead to issues like malfunctioning lights and unresponsive locks, which can affect your vehicle's performance and safety.
What are the most common causes of B0F79 and how much does it cost to fix?
Common causes include a faulty body control module, damaged wiring, and power supply issues. Repair costs can range from $100 for wiring repairs to $800 for BCM replacement.
Can I drive my car with B0F79 or should I stop immediately?
While you may be able to drive, it is advisable to have the issue diagnosed promptly. Ignoring this code can lead to further electrical problems that may compromise safety.
How can I diagnose B0F79 myself using GeekOBD APP?
With the GeekOBD APP, you can scan your vehicle for trouble codes, view freeze frame data for context, and perform live data monitoring to see how the BCM interacts with other systems.
What vehicles are most commonly affected by B0F79?
Commonly affected vehicles include the 2015-2020 Ford F-150, Escape, and Explorer, which often experience communication issues related to the body control module.
How can I prevent B0F79 from happening again?
Regular vehicle maintenance, including checking electrical connections for corrosion and ensuring proper battery health, can help prevent future occurrences of B0F79.
What is B0F79?
DTC B0F79 indicates a communication error between the body control module (BCM) and other control units in your vehicle. This code is frequently seen in various Ford models, including the F-150, Escape, and Explorer from 2015 to 2020. The body control module is responsible for managing several electronic components in the vehicle, such as lighting, door locks, and the alarm system. When the BCM fails to communicate properly with other modules, it may lead to a variety of issues ranging from minor inconveniences to significant safety problems. Drivers may experience symptoms like malfunctioning lights, unresponsive door locks, or even a failure in the vehicle's alarm system. If left unaddressed, this code can result in further electrical issues or component failure, which may escalate repair costs. It’s crucial to diagnose and repair the underlying issues as soon as possible. Understanding the implications of DTC B0F79 can help you act quickly to resolve these communication problems and maintain your vehicle's performance and safety.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0F79 is present:
- The check engine light or warning lights related to the BCM may illuminate, prompting a diagnostic check.
- Malfunctioning power windows or door locks, which may fail to operate correctly or intermittently.
- Lighting issues, such as headlights or tail lights flickering or not functioning at all, causing visibility problems.
- Alarm system failures, where the vehicle's alarm does not trigger or fails to respond to remote commands.
- Unresponsive dashboard indicators that may not display critical vehicle information properly.
Possible Causes
Most common causes of B0F79 (ordered by frequency):
- The most common cause of the B0F79 code is a faulty body control module, with a likelihood of around 60%. Damaged internal circuits or software issues can prevent proper communication.
- Another potential cause includes corroded or damaged wiring in the communication lines, which can occur due to exposure to moisture or road debris.
- A third possibility is a failed power supply to the BCM, often resulting from a weak battery or poor grounding connections. Regular battery maintenance can help prevent this.
- Less common issues may include software glitches, which can sometimes be fixed with a simple software update from the dealership.
- Rare, but possible, is interference from aftermarket electronics or modifications, which can disrupt the BCM's communication with other modules.
B0F79 Repair Costs
Cost Breakdown by Repair Type
BCM Replacement
Replacing the faulty body control module with a new unit.
- Total: $400 - $800
- Success rate: 90%
Wiring Repair
Fixing damaged wiring or connectors that affect communication.
- Total: $100 - $300
- Success rate: 85%
Money-Saving Tips for B0F79
- 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 B0F79 Diagnosis Process
Follow these systematic steps to accurately diagnose B0F79. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Conduct an initial visual inspection to check for damaged wiring, loose connections, or signs of corrosion in electrical connectors (5-10 minutes)
Step 1: Conduct an initial visual inspection to check for damaged wiring, loose connections, or signs of corrosion in electrical connectors (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan
Step 2: Use the GeekOBD APP to perform an OBD2 scan. Retrieve all codes and freeze frame data to gain context about the fault (10-15 minutes).
Step 3: Step 3: Test suspected components using a multimeter or appropriate diagnostic tools to check for power and signal integrity (20-30 minutes)
Step 3: Test suspected components using a multimeter or appropriate diagnostic tools to check for power and signal integrity (20-30 minutes).
Step 4: Step 4: Perform a system function test to verify that all modules communicate effectively after any repairs and clear the codes (10-15 minutes)
Step 4: Perform a system function test to verify that all modules communicate effectively after any repairs and clear the codes (10-15 minutes).
Step 5: Step 5: Conduct a road test under various conditions to ensure that the issue has been resolved and the vehicle operates normally (15-20 minutes)
Step 5: Conduct a road test under various conditions to ensure that the issue has been resolved and the vehicle operates normally (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 2017 Ford F-150
Vehicle: 2017 Ford F-150, 45,000 miles
Problem: Owner reported intermittent lighting issues and non-responsive door locks.
Diagnosis: Diagnostic scan revealed DTC B0F79 and confirmed communication failure with the BCM.
Solution: Replaced the body control module and performed a system function test.
Cost: $650 (parts: $400 for BCM, labor: $250)
Result: All systems operated normally post-repair, and the owner reported no further issues.
Case Study 2: Wiring Repair on 2018 Ford Escape
Vehicle: 2018 Ford Escape, 30,000 miles
Problem: Owner experienced flickering lights and alarm system failures.
Diagnosis: Visual inspection revealed corroded wiring connections affecting the BCM.
Solution: Repaired damaged wiring and secured connections.
Cost: $150 (materials: $50, labor: $100)
Result: Post-repair, lighting and alarm issues were resolved, with no further DTCs detected.