Quick Answer
B0C59 means: B0C59 indicates a communication issue with the body control module.
Can I drive with B0C59? Immediate attention recommended to prevent further electronic system failures.
Common Questions
What does B0C59 mean and how does it affect my car?
B0C59 indicates that your vehicle's body control module is having trouble communicating with other systems. This can lead to issues with power windows, door locks, and dashboard warnings. If not fixed, it can cause further electrical problems.
What are the most common causes of B0C59 and how much does it cost to fix?
Common causes include wiring issues, a faulty BCM, or software glitches. Fixing wiring can cost between $100 to $300, while replacing the BCM may range from $300 to $600.
Can I drive my car with B0C59 or should I stop immediately?
While you may still drive the vehicle, it is advisable to address the B0C59 code quickly to avoid potential safety issues related to malfunctioning systems.
How can I diagnose B0C59 myself using GeekOBD APP?
Using the GeekOBD APP, scan for trouble codes, review freeze frame data, and check for any additional codes that could give context to the issue. This will help you understand the severity and possible fixes.
What vehicles are most commonly affected by B0C59?
Typical vehicles affected include the 2015-2020 Ford F-150, Chevrolet Silverado 1500, and GMC Sierra. Always check for recalls or service bulletins that might address this issue.
How can I prevent B0C59 from happening again?
Regular maintenance, including checking wiring integrity and module updates, can help prevent B0C59 from recurring. Avoid aftermarket modifications that may interfere with OEM systems.
What is B0C59?
The diagnostic trouble code (DTC) B0C59 indicates a communication issue between the body control module (BCM) and other modules in the vehicle's network. This code is most commonly found in various Ford and General Motors (GM) models from 2015 to 2020. When B0C59 is triggered, it suggests that the BCM is unable to exchange information effectively with other control units, which can lead to various operational issues. In practical terms, this might affect functions like power windows, door locks, and even the vehicle's lighting system. If left unaddressed, the intermittent communication can lead to further complications, including complete failure of these systems. Owners may notice problems such as the inability to unlock doors remotely, malfunctioning interior lights, or dashboard warning lights. Given the critical role of the BCM in managing electronic systems, it is essential to diagnose and resolve this issue promptly to ensure the vehicle operates safely and reliably.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0C59 is present:
- Check engine light stays on constantly, indicating a persistent issue with the BCM's communication.
- Power windows may operate erratically or not at all, impacting convenience and safety.
- Interior lights fail to function properly, causing visibility issues when entering or exiting the vehicle.
- Remote keyless entry may stop working, making it difficult to lock or unlock doors from a distance.
- Dashboard warning lights may illuminate unexpectedly, indicating potential electrical issues elsewhere.
Possible Causes
Most common causes of B0C59 (ordered by frequency):
- {'cause': 'Wiring issues or damaged connectors', 'likelihood': '40%', 'details': 'Frayed wires or loose connectors can disrupt communication between the BCM and other modules.'}
- {'cause': 'Faulty body control module', 'technicalExplanation': 'A malfunctioning BCM can fail to send or receive signals correctly, triggering the B0C59 code.'}
- {'cause': 'Software glitches', 'preventionTips': "Regularly update the vehicle's software to ensure all modules are functioning correctly."}
- {'cause': 'Corrosion on connectors', 'seriousness': 'Corrosion can lead to significant electrical failures if not addressed promptly.'}
- {'cause': 'Aftermarket modifications', 'rarity': "Less common but can affect the BCM's performance due to incompatible parts."}
B0C59 Repair Costs
Cost Breakdown by Repair Type
Wiring repair or replacement
Repairing or replacing damaged wiring or connectors.
- Total: $100 - $300
- Success rate: 85%
BCM replacement
Replacing the faulty body control module.
- Total: $300 - $600
- Success rate: 90%
Money-Saving Tips for B0C59
- 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 B0C59 Diagnosis Process
Follow these systematic steps to accurately diagnose B0C59. 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 to test the BCM and related wiring for continuity and voltage (20-30 minutes)
Step 3: Component testing - Use a multimeter to test the BCM and related wiring for continuity and voltage (20-30 minutes).
Step 4: Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - Verify proper operation after repairs and clear codes using the GeekOBD APP (10-15 minutes).
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).
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: Body Control Module Replacement in 2017 Ford F-150
Vehicle: 2017 Ford F-150, 45,000 miles
Problem: Customer reported issues with remote keyless entry and dashboard warning lights.
Diagnosis: After scanning with GeekOBD APP, B0C59 was retrieved alongside several other codes. Visual inspection revealed corroded connectors.
Solution: Replaced the corroded connectors and the BCM, cleared codes, and verified operation.
Cost: $450 (parts: $300 BCM, $150 labor)
Result: All systems functioned correctly after repair, and customer reported no further issues.
Case Study 2: Wiring Repair on 2019 Chevrolet Silverado
Vehicle: 2019 Chevrolet Silverado, 25,000 miles
Problem: Driver experienced intermittent power window failures and interior light malfunctions.
Diagnosis: Diagnostic scan revealed B0C59. An inspection located damaged wiring near the driver's side door.
Solution: Repaired the damaged wiring and secured loose connections.
Cost: $150 (labor included)
Result: All features restored to normal operation, and driver was satisfied with the quick fix.