B0C85 - Understanding the Body Control Module Issue in 2015-2020 Ford F-150 and Other Models

Quick Answer

B0C85 means: B0C85 indicates a fault in the Body Control Module.

Fix: Check and replace faulty components Cost: $300 - $800 Time: 90-180 minutes

Can I drive with B0C85? Immediate attention is recommended to avoid further electrical issues.

Common Questions

What does B0C85 mean and how does it affect my car?

The B0C85 code signifies a problem with your vehicle's Body Control Module (BCM). This component is responsible for managing various electrical systems in your car. If the BCM is malfunctioning, you may experience issues like power windows not working, doors failing to lock, or lights flickering. These problems can lead to safety concerns and affect your vehicle's overall performance.

What are the most common causes of B0C85 and how much does it cost to fix?

Common causes of the B0C85 code include a faulty Body Control Module, damaged wiring, and poor grounding. Repair costs vary widely, from around $100 for wiring repairs to $800 for a complete BCM replacement, depending on the severity of the issue and labor costs in your area.

Can I drive my car with B0C85 or should I stop immediately?

While you might still be able to drive your vehicle, it's not advisable to ignore the B0C85 code. Continuing to drive with this issue could lead to more significant electrical failures, which may compromise your safety. It's best to have the problem diagnosed and repaired as soon as possible.

How can I diagnose B0C85 myself using GeekOBD APP?

To diagnose the B0C85 code using the GeekOBD APP, connect your OBD-II scanner to the vehicle's port. Open the app, select the option to read trouble codes, and note any additional codes or freeze frame data. This information will help you understand the context of the B0C85 and guide your troubleshooting efforts.

What vehicles are most commonly affected by B0C85?

The B0C85 code is frequently reported in models such as the 2015-2020 Ford F-150 and other Ford vehicles from similar production years. Known issues may also be documented in technical service bulletins (TSBs) for these models, advising on specific repairs or recalls.

How can I prevent B0C85 from happening again?

To prevent the B0C85 code from reoccurring, ensure regular maintenance of your vehicle's electrical systems. Check wiring and connectors for signs of wear, and keep your battery in good condition. Regularly inspect your BCM and its connections, and consider using a diagnostic tool like the GeekOBD APP to monitor for potential issues before they escalate.

What is B0C85?

The diagnostic trouble code B0C85 indicates a malfunction within the Body Control Module (BCM) of your vehicle. The BCM is a crucial component responsible for controlling various electronic systems in your car, including lighting, power windows, and door locks. When the B0C85 code is triggered, it typically means that the BCM has detected a fault in one of its circuits or components. This can manifest as erratic behavior in the vehicle's electrical systems, such as lights flickering, windows not operating, or doors failing to lock or unlock. In practical terms, this could lead to inconvenience and, in some cases, safety issues, especially if the car's security features are compromised. For owners of popular models like the 2015-2020 Ford F-150, this code can be particularly troublesome, as it may affect the vehicle's functionality and user experience significantly. Ignoring the B0C85 code may also lead to further complications, including increased repair costs down the line, so addressing it promptly is advisable.

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

Symptoms

Common symptoms when B0C85 is present:

  • The check engine light may illuminate or flash intermittently, indicating the need for diagnostics.
  • Power windows may malfunction, either failing to operate or operating erratically.
  • Exterior lights may flicker or fail to turn on, affecting safety when driving at night.
  • Door locks may not respond, causing issues with securing the vehicle.
  • Increased battery drain could occur, potentially leading to a dead battery if the issue persists.

Possible Causes

Most common causes of B0C85 (ordered by frequency):

  1. The most common cause of the B0C85 code is a faulty Body Control Module, which can occur in about 60% of cases. This may happen due to internal component failure or software issues.
  2. Another potential cause is damaged wiring or connectors leading to the BCM, which can account for roughly 25% of instances. Corrosion or wear over time can contribute to this issue.
  3. Poor grounding is also a factor that can lead to the B0C85 code. Ensuring all grounds are secure can help prevent this issue from developing.
  4. In rare cases, a malfunctioning ignition switch can trigger the B0C85 code, affecting the BCM's ability to receive proper power.
  5. Lastly, a dead or weak battery can cause voltage fluctuations that the BCM cannot handle, potentially leading to this code.

B0C85 Repair Costs

Cost Breakdown by Repair Type

Replace Body Control Module

This option involves replacing the faulty BCM with a new or refurbished unit.

  • Total: $300 - $800
  • Success rate: 90%
Repair Wiring and Connectors

This option includes repairing damaged wiring and connectors leading to the BCM.

  • Total: $100 - $300
  • Success rate: 80%
Money-Saving Tips for B0C85
  • 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 B0C85 Diagnosis Process

Follow these systematic steps to accurately diagnose B0C85. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Look for any damaged wiring or loose connections around the BCM and its related components (5-10 minutes)

Step 1: Initial visual inspection - Look for any damaged wiring or loose connections around the BCM and its related components (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 - Use the GeekOBD APP to retrieve the DTCs and freeze frame data, which can provide context for the fault (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Use the GeekOBD APP to retrieve the DTCs and freeze frame data, which can provide context for the fault (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 to test voltage levels and continuity in the wiring harness connected to the BCM (20-30 minutes)

Step 3: Component testing - Use a multimeter to test voltage levels and continuity in the wiring harness connected to the BCM (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 - After making repairs, verify that all electrical systems controlled by the BCM are functioning properly, and clear the codes (10-15 minutes)

Step 4: System function test - After making repairs, verify that all electrical systems controlled by the BCM are functioning properly, and clear the codes (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 to ensure that all systems are operational and the B0C85 code does not return (15-20 minutes)

Step 5: Road test verification - Drive the vehicle to ensure that all systems are operational and the B0C85 code does not return (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 in 2017 Ford F-150

Vehicle: 2017 Ford F-150, 45,000 miles

Problem: Customer reported erratic power window operation and flickering dashboard lights.

Diagnosis: OBD-II scan revealed B0C85 along with intermittent electrical issues. Visual inspection showed corroded connectors.

Solution: Replaced the Body Control Module and repaired the wiring harness.

Cost: $650 (parts: $450 for BCM, $200 for labor)

Result: All electrical systems returned to normal function; customer satisfaction confirmed.

Case Study 2: Wiring Repair for 2018 Ford Explorer

Vehicle: 2018 Ford Explorer, 30,000 miles

Problem: Customer noticed doors not locking, with the check engine light on.

Diagnosis: B0C85 was identified through the GeekOBD APP, with further inspection revealing damaged wiring.

Solution: Repaired the damaged wiring and cleaned the connectors.

Cost: $200 (parts: $50 for connectors, $150 for labor)

Result: Doors locked properly, and the check engine light was cleared successfully.

Diagnose B0C85

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B0C85
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes