Quick Answer
B059B means: B059B indicates a body control module issue affecting vehicle electronics.
Can I drive with B059B? Immediate attention is recommended to prevent further electrical issues.
Common Questions
What does B059B mean and how does it affect my car?
B059B signifies an issue with your vehicle's body control module, leading to problems with electronics such as lights, windows, and keyless entry. If left unresolved, it can cause further electrical complications that may affect overall vehicle performance.
What are the most common causes of B059B and how much does it cost to fix?
The most common cause is a faulty BCM, accounting for around 60% of cases. Repair costs can range from $100 to $800 depending on whether the BCM needs replacement or if there's a wiring issue.
Can I drive my car with B059B or should I stop immediately?
While you may be able to drive short distances, it's advised to have the issue checked as soon as possible. Ignoring this code can lead to battery drain and further system failures.
How can I diagnose B059B myself using GeekOBD APP?
Using the GeekOBD APP, you can scan your vehicle for the B059B code, view freeze frame data, and see any other trouble codes that may help identify the issue. This app also provides live data for further diagnostics.
What vehicles are most commonly affected by B059B?
B059B is frequently seen in 2015-2019 models of Ford (like the F-150) and Chevrolet (like the Silverado) due to their similar BCM setups.
How can I prevent B059B from happening again?
Regular maintenance checks on your vehicle's electrical system and ensuring that software updates are applied can help prevent the recurrence of the B059B code.
What is B059B?
The diagnostic trouble code (DTC) B059B indicates a fault related to the vehicle's body control module (BCM) or its communication with other modules, particularly affecting the lighting and accessory functions. When this code is triggered, it often results in various malfunctions, such as non-functioning lights, issues with power windows, or problems with the vehicle's keyless entry system. The B059B code typically appears in vehicles from popular manufacturers like Ford and Chevrolet, especially in models released between 2015 and 2019. For example, you may notice that your Ford F-150's interior lights won't turn off or that the key fob is unresponsive. The BCM is responsible for controlling multiple electronic components in modern vehicles, and any disruption can lead to a range of electrical issues. Ignoring this code can lead to further complications, such as draining the battery due to persistent electrical draw. It is essential for car owners to understand the implications of this code, as timely repairs can prevent more extensive and costly damage to the vehicle's electrical system.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B059B is present:
- Check engine light stays on constantly, indicating an underlying issue that needs immediate attention.
- Power windows may operate erratically, causing inconvenience and safety concerns.
- Interior lights may fail to turn off, leading to potential battery drain if not addressed promptly.
- Keyless entry system may become unresponsive, preventing access to the vehicle.
- Dashboard warning lights may illuminate unexpectedly, signaling multiple electronic malfunctions.
Possible Causes
Most common causes of B059B (ordered by frequency):
- {'cause': 'Faulty Body Control Module (BCM)', 'likelihood': '60%', 'details': 'The BCM is the primary control unit for many electrical components. A malfunction can lead to widespread issues.'}
- {'cause': 'Corroded or Damaged Wiring Harness', 'details': 'Wiring issues can interrupt communication between the BCM and other electronic modules, triggering the B059B code.'}
- {'cause': 'Software Glitches', 'details': 'Outdated software in the BCM can lead to miscommunication and trigger this DTC. Regular updates can prevent this.'}
- {'cause': 'Poor Ground Connections', 'details': 'Bad ground connections can cause intermittent issues that lead to the B059B code being stored.'}
- {'cause': 'Aftermarket Modifications', 'details': 'Certain aftermarket electrical modifications can interfere with the BCM operation, leading to this code.'}
B059B Repair Costs
Cost Breakdown by Repair Type
BCM Replacement
Replacing the body control module can resolve the B059B code if the BCM is found to be faulty.
- Total: $300 - $800
- Success rate: 90%
Wiring Repair
Repairing corroded or damaged wiring can fix communication issues between modules.
- Total: $100 - $300
- Success rate: 85%
Money-Saving Tips for B059B
- 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 B059B Diagnosis Process
Follow these systematic steps to accurately diagnose B059B. 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 the BCM and wiring harness (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test the BCM and wiring harness (20-30 minutes).
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).
Step 5: Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (15-20 minutes)
Step 5: Road test verification - Drive vehicle under various conditions to confirm repair success (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, Mileage: 45,000
Problem: Customer reported that interior lights would not turn off and keyless entry was unresponsive.
Diagnosis: An OBD2 scan revealed the B059B code. Further testing indicated a faulty BCM.
Solution: Replaced the body control module with a new part and reprogrammed it.
Cost: $600 (parts: $400, labor: $200)
Result: All electrical functions returned to normal, and the customer reported satisfaction.
Case Study 2: Wiring Repair on 2018 Chevrolet Silverado
Vehicle: 2018 Chevrolet Silverado, Mileage: 30,000
Problem: Owner experienced intermittent power window failures and dashboard warning lights.
Diagnosis: Diagnosis revealed corroded wiring in the harness connected to the BCM, triggering the B059B code.
Solution: Repaired the wiring and secured connections to ensure reliable operation.
Cost: $150 (parts: $50, labor: $100)
Result: The vehicle's electrical functions were restored, and no further issues were reported.