Quick Answer
B0C90 means: B0C90 indicates a problem with the Body Control Module's communication network.
Can I drive with B0C90? Address immediately to prevent further electrical issues.
Common Questions
What does B0C90 mean and how does it affect my car?
B0C90 indicates a communication issue with your vehicle’s Body Control Module, affecting systems like central locking and interior lights. This can lead to inconveniences and safety risks, making timely diagnosis critical.
What are the most common causes of B0C90 and how much does it cost to fix?
The main causes include damaged wiring (40% likelihood), a faulty BCM (30%), or poor connections (20%). Repair costs range from $150 for wiring repairs to $800 for BCM replacement.
Can I drive my car with B0C90 or should I stop immediately?
While you may be able to drive, it's not advisable to ignore this code. It can lead to further electrical issues, which could compromise your vehicle's safety and functionality.
How can I diagnose B0C90 myself using GeekOBD APP?
Download the GeekOBD APP, connect it to your vehicle's OBD2 port, and run a full system scan. Look for the B0C90 code and any additional codes that may provide context for the issue.
What vehicles are most commonly affected by B0C90?
Commonly affected vehicles include the 2016-2020 Ford Explorer, but it can also appear in various other models with similar BCM configurations.
How can I prevent B0C90 from happening again?
Regularly inspect wiring and connections, keep the BCM area dry, and perform software updates as recommended by your vehicle's manufacturer.
What is B0C90?
The diagnostic trouble code (DTC) B0C90 is primarily associated with the Body Control Module (BCM) and indicates a malfunction related to the vehicle's communication network. This code can trigger in several scenarios, particularly in vehicles manufactured from 2016 to 2020, such as the Ford Explorer. The BCM is responsible for managing various electrical systems in your vehicle, including lighting, door locks, and even the vehicle's alarm system. When B0C90 is triggered, it generally means that the BCM has detected a fault in the communication link between it and other modules or components. This can lead to a host of issues, including failure of the central locking system, malfunctioning interior lights, or even the inability to start the engine in some cases. It's essential for drivers to address this code promptly, as ignoring it can result in more significant electrical problems and potentially compromise vehicle safety. A proper diagnostic process utilizing tools such as the GeekOBD APP can help pinpoint the exact failure point, ensuring effective repairs. Understanding this code's implications helps in maintaining your vehicle's functionality and safety.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0C90 is present:
- The check engine light remains illuminated consistently, indicating a persistent issue.
- Central locking system might fail intermittently, causing inconvenience and security concerns.
- Interior lights may not turn on or off as expected, affecting usability and comfort.
- Difficulty starting the engine, which can lead to being stranded if not addressed.
- Inconsistent operation of electrical components like turn signals and dashboard indicators.
Possible Causes
Most common causes of B0C90 (ordered by frequency):
- Most common cause: Corroded or damaged wiring (40%), which can disrupt the communication between modules.
- Second cause: Faulty Body Control Module (30%), often due to manufacturing defects or wear over time.
- Third cause: Poor connections at the BCM connectors (20%), which can be prevented by regular checks and maintenance.
- Less common but serious cause: Water ingress into the BCM housing, leading to short-circuits and module failure.
- Rare cause: Software issues in the BCM that may require a software update or reprogramming.
B0C90 Repair Costs
Cost Breakdown by Repair Type
Wiring Repair
Repairing or replacing damaged wiring related to the BCM.
- Total: $150 - $400
- Success rate: 80%
BCM Replacement
Replacing the Body Control Module if found faulty.
- Total: $300 - $800
- Success rate: 90%
Software Update
Updating the BCM software to fix communication issues.
- Total: $100 - $200
- Success rate: 75%
Money-Saving Tips for B0C90
- 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 B0C90 Diagnosis Process
Follow these systematic steps to accurately diagnose B0C90. 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 suspected components (20-30 minutes)
Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components (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 Wiring Repair on 2018 Ford Explorer
Vehicle: 2018 Ford Explorer, 45,000 miles
Problem: Customer reported central locking system failure and check engine light on.
Diagnosis: Upon inspection, the technician found corrosion on the wiring harness connected to the BCM.
Solution: Repaired damaged wiring and replaced corroded connectors.
Cost: $250
Result: The repair resolved the check engine light, and the central locking system functioned correctly.
Case Study 2: BCM Replacement on 2019 Ford Escape
Vehicle: 2019 Ford Escape, 30,000 miles
Problem: Customer experienced intermittent electrical failures and dashboard warning lights.
Diagnosis: Diagnostic testing indicated a faulty BCM that could not communicate with other modules.
Solution: Replaced the Body Control Module with a new OEM part.
Cost: $600
Result: All electrical systems returned to normal operation after the BCM replacement.