B0805 - Airbag Control Module Fault in Honda Accord and Toyota Camry

Quick Answer

B0805 means: DTC B0805 indicates a fault in the driver's side airbag circuit, affecting airbag deployment.

Fix: Check and replace faulty components Cost: $150 - $300 Time: 90-180 minutes

Can I drive with B0805? Immediate attention is necessary to ensure safety and proper airbag functionality.

Common Questions

What does B0805 mean and how does it affect my car?

DTC B0805 indicates an issue with the driver's side airbag circuit, which can prevent the airbag from deploying in an accident. This poses a significant safety risk and requires immediate attention to ensure your vehicle's airbag system is functioning correctly.

What are the most common causes of B0805 and how much does it cost to fix?

Common causes of B0805 include damaged wiring (60% likelihood), faulty control modules (25%), and corrosion (10%). Repair costs can range from $150 for wiring repairs to $800 for module replacement, depending on the specific issue.

Can I drive my car with B0805 or should I stop immediately?

It's advisable to stop driving your car immediately if you see the B0805 code. The airbag system may not operate in an accident, putting you and your passengers at risk.

How can I diagnose B0805 myself using GeekOBD APP?

To diagnose B0805 using the GeekOBD APP, first, connect the app to your vehicle's OBD2 port. Use the app to scan for trouble codes and access freeze frame data. This information will help you understand the context of the fault and necessary next steps.

What vehicles are most commonly affected by B0805?

B0805 is frequently seen in vehicles like the 2010-2015 Honda Accord and 2007-2012 Toyota Camry. It's important to check for any recalls or technical service bulletins (TSBs) related to the airbag system for these models.

How can I prevent B0805 from happening again?

To prevent B0805, regularly inspect the airbag system's wiring and connectors for damage or corrosion. Keeping the vehicle clean and dry, especially around electrical components, can also help mitigate risks.

What is B0805?

The Diagnostic Trouble Code (DTC) B0805 indicates a fault within the airbag control module, specifically related to the driver's side airbag circuit. This code is often triggered when the airbag system detects an anomaly, such as a short circuit, open circuit, or fault in the wiring harness that connects the airbag to the control module. When the vehicle's onboard diagnostics system senses this problem, it will illuminate the airbag warning light on the dashboard. Affected vehicles may include popular models like the 2010-2015 Honda Accord and 2007-2012 Toyota Camry. Ignoring this code can lead to serious safety concerns, as it may prevent the airbags from deploying in the event of an accident, increasing the risk of injury. Additionally, if the airbag system is compromised, you may experience diminished vehicle safety features, which could also affect insurance coverage. Therefore, understanding this code and its implications is critical for maintaining vehicle safety and compliance with automotive safety regulations.

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

Symptoms

Common symptoms when B0805 is present:

  • The airbag warning light stays on constantly, indicating a malfunction within the airbag system.
  • The vehicle may display error messages on the dashboard related to airbag functionality, leading to confusion for the driver.
  • Inconsistent airbag performance during tests, with the airbag not deploying during simulated conditions, raising serious safety concerns.
  • Increased chances of vehicle insurance complications, as some insurance companies may require a functioning airbag system to cover damages during accidents.
  • In some cases, the vehicle's electrical system may exhibit odd behaviors due to interference from faulty airbag circuits.

Possible Causes

Most common causes of B0805 (ordered by frequency):

  1. The most common cause of B0805 is damaged wiring or connectors, which occurs in approximately 60% of cases. This can happen due to wear and tear, moisture intrusion, or impacts during regular vehicle use.
  2. A faulty airbag control module can also trigger this code, accounting for about 25% of cases. These modules can fail due to internal electrical issues or manufacturing defects.
  3. Corrosion at the connector points, especially in older vehicles or those exposed to harsh environments, contributes to around 10% of failures. Regular inspections can help prevent this.
  4. Less common but serious causes include issues with the airbag itself, such as deployment failure or internal failures, which can be extremely dangerous if not addressed.
  5. In rare cases, software glitches in the vehicle's onboard computer system may cause false triggers of the B0805 code. Ensuring regular software updates can help mitigate this risk.

B0805 Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repairing or replacing damaged wiring and connectors associated with the airbag system.

  • Total: $150 - $300
  • Success rate: 85%
Airbag Control Module Replacement

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

  • Total: $400 - $800
  • Success rate: 90%
Money-Saving Tips for B0805
  • 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 B0805 Diagnosis Process

Follow these systematic steps to accurately diagnose B0805. 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 to test the airbag circuit, checking for continuity and proper voltage (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the airbag circuit, checking for continuity and proper voltage (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 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).

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 monitor the airbag light (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success and monitor the airbag light (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: Repairing B0805 in a 2013 Honda Accord

Vehicle: 2013 Honda Accord, 75,000 miles

Problem: Customer reported constant airbag warning light on the dashboard.

Diagnosis: Initial scans revealed B0805. A visual inspection indicated damaged wiring near the driver's seat.

Solution: Repaired the damaged wiring and cleared the codes using the GeekOBD APP. Conducted a road test to confirm the airbag system was functioning correctly.

Cost: $200 (includes parts and labor)

Result: The airbag warning light was extinguished, and the airbag system passed all function tests.

Case Study 2: Addressing B0805 in a 2011 Toyota Camry

Vehicle: 2011 Toyota Camry, 90,000 miles

Problem: Customer experienced airbag warning light with occasional dashboard alerts.

Diagnosis: Diagnostic scanning revealed B0805, leading to the identification of a faulty airbag control module.

Solution: Replaced the airbag control module and programmed it to the vehicle. Cleared the codes and verified airbag functionality.

Cost: $600 (parts and labor included)

Result: The airbag system was restored to full functionality, and the customer reported satisfaction with the repair.

Diagnose B0805

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: B0805
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes