B0164 - Body Control Module (BCM) Fault in Common Vehicles Like Honda Accord and Toyota Camry

Quick Answer

B0164 means: The B0164 code indicates a fault in the body control module (BCM).

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

Can I drive with B0164? Address as soon as possible to prevent further electrical issues.

Common Questions

What does B0164 mean and how does it affect my car?

The B0164 code signifies a problem with your vehicle's body control module (BCM). This module controls various electronic components, and when it malfunctions, you may notice issues such as non-functional power windows, flickering lights, or a dead battery. Addressing the B0164 code quickly is important to maintain vehicle performance and safety.

What are the most common causes of B0164 and how much does it cost to fix?

The primary causes of the B0164 code include a faulty BCM, damaged wiring, and software glitches. Repair costs can vary widely, with BCM replacement ranging from $300 to $600, while wiring repairs can cost between $100 and $200, and software updates are generally the least expensive at around $50 to $100.

Can I drive my car with B0164 or should I stop immediately?

While you might still be able to drive your vehicle with the B0164 code, it is advisable to address the issue as soon as possible. Ignoring it could lead to further electrical problems, including the risk of a dead battery or malfunctioning safety features.

How can I diagnose B0164 myself using GeekOBD APP?

To diagnose B0164 using the GeekOBD APP, start by connecting the app to your vehicle's OBD2 port. Run a full scan to retrieve the DTC codes and view freeze frame data. This information helps you understand the conditions under which the code appeared, which is crucial for accurate diagnostics.

What vehicles are most commonly affected by B0164?

The B0164 code is frequently reported in vehicles such as the 2013-2017 Honda Accord and the 2012-2016 Toyota Camry. Owners of these models should be particularly vigilant for symptoms associated with this code, as they are more prone to BCM-related issues.

How can I prevent B0164 from happening again?

To prevent the B0164 code from recurring, ensure regular maintenance of your vehicle's electrical system, including checking for corrosion on connectors and keeping connections clean. Regular software updates from your dealer can also help maintain the BCM's functionality.

What is B0164?

DTC B0164 is a diagnostic trouble code that indicates a fault related to the body control module (BCM) in your vehicle. The BCM is responsible for managing various electronic functions in the car, such as power windows, door locks, and interior lights. When this code is triggered, it typically means there is an issue with the communication between the BCM and other critical systems. This could be due to wiring issues, a faulty module, or even a software glitch. Drivers may experience symptoms such as malfunctioning lights or accessories, and in some cases, it may lead to a drain on the vehicle's battery if the module is stuck in an active state. Ignoring this code can lead to further electrical problems and potentially impact the vehicle's overall performance. Vehicles like the 2013-2017 Honda Accord and 2012-2016 Toyota Camry are particularly susceptible to this issue, making it essential for owners to understand the implications of the B0164 code.

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

Symptoms

Common symptoms when B0164 is present:

  • The check engine light stays on constantly, indicating a persistent issue that needs attention.
  • Power windows may fail to operate properly, leading to inconvenience while driving.
  • Interior lights flicker or do not turn on, affecting visibility when entering or exiting the vehicle.
  • Remote key fob may fail to unlock the doors, causing frustration for the driver.
  • Battery drain can occur if the BCM remains in an active state, leading to a dead battery.

Possible Causes

Most common causes of B0164 (ordered by frequency):

  1. Faulty body control module (BCM) - This is the most common cause, with a likelihood of about 40%. The module may suffer from internal failures due to age or manufacturing defects.
  2. Damaged wiring or corrosion - Approximately 30% of cases are attributed to wiring issues where connections become loose or corroded, impacting communication.
  3. Software glitch - About 20% of B0164 codes arise from a software issue that can often be resolved with a simple update.
  4. Less common: Short circuit in the electrical system - This serious issue can lead to multiple system failures and requires professional diagnosis.
  5. Rare: Faulty ground connection - A bad ground can cause erratic BCM behavior, though it's less frequently encountered.

B0164 Repair Costs

Cost Breakdown by Repair Type

BCM Replacement

Replacing the faulty body control module with a new or refurbished unit.

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

Fixing damaged or corroded wiring that impacts the BCM's functionality.

  • Total: $100 - $200
  • Success rate: 90%
Software Update

Updating the BCM software to resolve glitches.

  • Total: $50 - $100
  • Success rate: 70%
Money-Saving Tips for B0164
  • 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 B0164 Diagnosis Process

Follow these systematic steps to accurately diagnose B0164. 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).

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 - 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).

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 or specific diagnostic tools to test suspected components, focusing on the BCM and its connections (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, focusing on the BCM and its connections (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 - Verify proper operation after repairs and clear codes, ensuring that the BCM communicates correctly with other systems (10-15 minutes)

Step 4: System function test - Verify proper operation after repairs and clear codes, ensuring that the BCM communicates correctly with other systems (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 under various conditions to confirm repair success and ensure no codes reappear (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and ensure no codes reappear (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 on 2015 Honda Accord

Vehicle: 2015 Honda Accord, 75,000 miles

Problem: Customer reported intermittent power window failures and flickering interior lights.

Diagnosis: After a thorough inspection and diagnostic scan, the B0164 code was identified along with a confirmed faulty BCM.

Solution: The BCM was replaced, and all related wiring was checked for damage. The issue was resolved successfully.

Cost: $450 (BCM $400, labor $50)

Result: The customer reported all electrical functions returned to normal, and the code no longer appears.

Case Study 2: Wiring Repair on 2014 Toyota Camry

Vehicle: 2014 Toyota Camry, 60,000 miles

Problem: Customer experienced non-functional remote key fob and inconsistent door locks.

Diagnosis: Diagnostic scanning revealed the B0164 code, and a visual inspection showed corroded wiring connections.

Solution: Corroded connections were repaired, and the wiring was secured. The BCM remained functional.

Cost: $150 (parts $30, labor $120)

Result: The remote key fob and door locks functioned perfectly after the repair, with no recurrence of the code.

Diagnose B0164

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: B0164
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: MEDIUM
Category: Body Codes