B10C3 - Understanding the Body Control Module Malfunction in 2015-2020 Ford and Chrysler Models

Quick Answer

B10C3 means: B10C3 indicates a malfunction in the Body Control Module (BCM) related to body functions.

Fix: Check and replace faulty components Cost: $300 - $600 Time: 90-180 minutes

Can I drive with B10C3? Address immediately to avoid further electrical issues.

Common Questions

What does B10C3 mean and how does it affect my car?

The B10C3 code signifies an issue with the Body Control Module, which manages essential electrical systems like locks and lights. If ignored, it can lead to malfunctioning systems and safety risks.

What are the most common causes of B10C3 and how much does it cost to fix?

Common causes include a faulty BCM or wiring issues, with repair costs ranging from $100 to $600 depending on the specific repair needed.

Can I drive my car with B10C3 or should I stop immediately?

Driving with a B10C3 code is not recommended as it indicates potential failures in critical systems. It's best to have it diagnosed and repaired as soon as possible.

How can I diagnose B10C3 myself using GeekOBD APP?

Using the GeekOBD APP, you can scan for DTCs, review freeze frame data, and monitor live parameters to pinpoint the BCM issue.

What vehicles are most commonly affected by B10C3?

This code is often found in 2015-2020 Ford F-150s and various Chrysler models, including the Dodge Charger and Jeep Grand Cherokee.

How can I prevent B10C3 from happening again?

Regularly inspect electrical connections and ensure your vehicle's software is updated. Keeping moisture away from electrical components can also help prevent this issue.

What is B10C3?

The B10C3 diagnostic trouble code (DTC) indicates a malfunction in the Body Control Module (BCM) related to the vehicle's central locking system or other body functions. This code is commonly triggered in vehicles such as the 2015-2020 Ford F-150 and various Chrysler models, including the Dodge Charger and Jeep Grand Cherokee. When this code appears, it typically means that the BCM is not receiving the appropriate signals from its components or is unable to communicate effectively with other modules. In simpler terms, the body control module is responsible for managing various electrical systems in the vehicle, such as door locks, interior lighting, and even the windshield wipers. If there's a fault, you may notice that features controlled by the BCM malfunction. Ignoring this code could lead to more significant electrical issues or safety concerns, as affected systems might fail unexpectedly. Regular diagnostics and addressing this code promptly can save you time and repair costs down the road.

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

Symptoms

Common symptoms when B10C3 is present:

  • Check engine light may illuminate, indicating a problem with the electrical system.
  • Power door locks may fail to operate, preventing you from locking or unlocking the doors.
  • Interior lighting may flicker or fail to work, affecting visibility inside the vehicle.
  • Windshield wipers may malfunction, either not working at all or operating erratically.
  • Battery drain could occur due to BCM not entering sleep mode, leading to starting issues.

Possible Causes

Most common causes of B10C3 (ordered by frequency):

  1. The most common cause is a faulty Body Control Module, with a likelihood of 40%. This can result from manufacturing defects or water damage.
  2. Wiring issues or corroded connectors account for about 30%. These problems can disrupt communication between the BCM and other systems.
  3. Software glitches in the BCM can cause malfunction, around 15%. Regular updates can help prevent this.
  4. Less common but serious causes include electrical shorts in the harness, which can lead to more extensive damage if left unchecked.
  5. Rarely, a faulty ignition switch may trigger this code, affecting power distribution to the BCM.

B10C3 Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the Body Control Module can resolve the B10C3 code effectively.

  • Total: $300 - $600
  • Success rate: 85%
Wiring Repair

Cleaning or replacing corroded connectors and wiring.

  • Total: $100 - $250
  • Success rate: 70%
Money-Saving Tips for B10C3
  • 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 B10C3 Diagnosis Process

Follow these systematic steps to accurately diagnose B10C3. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion (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: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (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: Component testing - Use a multimeter or specific diagnostic tools to test suspected components and wiring (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: System function test - Verify proper operation after repairs and clear codes to ensure the issue is resolved (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: Road test verification - Drive the vehicle under various conditions to confirm repair success and check for any recurring codes (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 a 2018 Ford F-150

Vehicle: 2018 Ford F-150, 45,000 miles

Problem: Customer reported intermittent power door lock failure and flickering interior lights.

Diagnosis: OBD2 scan revealed B10C3. Visual inspection showed corrosion on BCM connectors.

Solution: Replaced the Body Control Module and cleaned connectors.

Cost: $450 (BCM - $350, Labor - $100)

Result: Post-repair, all functions were restored, and no codes returned after road testing.

Case Study 2: Wiring Repair in a 2019 Dodge Charger

Vehicle: 2019 Dodge Charger, 30,000 miles

Problem: Owner noticed wipers malfunctioning and frequent battery drain.

Diagnosis: B10C3 code confirmed, with wiring issues identified during inspection.

Solution: Repaired damaged wiring and secured connections.

Cost: $150 (Labor included)

Result: All systems functioned normally after repair, and no further issues noted.

Diagnose B10C3

Use GeekOBD APP for professional diagnosis!

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  • Step-by-step repair guidance
  • Professional-grade analysis
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Code Information

Code: B10C3
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes