Quick Answer
B1920 means: DTC B1920 indicates an issue with the airbag system, particularly relating to passenger airbag deployment.
Can I drive with B1920? Immediate attention is recommended to ensure airbag functionality and passenger safety.
Common Questions
What does B1920 mean and how does it affect my car?
The B1920 code signifies an airbag system malfunction, particularly affecting the passenger airbag. This can lead to the airbag not deploying in an accident, significantly increasing risk for occupants. It is crucial to address this issue urgently to ensure safety.
What are the most common causes of B1920 and how much does it cost to fix?
Common causes include faulty airbag sensors, damaged wiring, or control module failures. Repair costs typically range from $100 for wiring repairs to $700 for control module replacements, depending on the specific issue.
Can I drive my car with B1920 or should I stop immediately?
It is highly recommended to stop driving and address the B1920 code as soon as possible. Continuing to drive with this code could mean your airbag will not deploy in a crash, posing a serious safety risk.
How can I diagnose B1920 myself using GeekOBD APP?
To diagnose B1920 using the GeekOBD APP, connect the app to your vehicle's OBD2 port and run a scan. Review the retrieved codes and freeze frame data to identify the specific issue and any related symptoms.
What vehicles are most commonly affected by B1920?
B1920 is frequently reported in vehicles such as the 2010-2015 Honda Accord, 2008-2013 Ford Focus, and 2007-2012 Toyota Camry. It's advisable to check for any recalls or technical service bulletins regarding airbag issues for these models.
How can I prevent B1920 from happening again?
To prevent B1920, ensure regular maintenance checks on the airbag system, avoid aftermarket modifications, and keep wiring and connectors clean and dry. Periodically using diagnostic tools like the GeekOBD APP can help catch potential issues early.
What is B1920?
The diagnostic trouble code B1920 indicates a malfunction within the airbag system, specifically related to the passenger side airbag or its components. This code is commonly found in various vehicles including models from Honda, Ford, and Toyota. When this code triggers, it often suggests that there is an issue with the airbag module, wiring, or the sensors associated with the airbag deployment system. The airbag system is crucial for passenger safety, as it deploys in the event of a collision to reduce the risk of injury. If the B1920 code is present, the airbag warning light will typically illuminate on the dashboard, signaling that the system may not function correctly in an accident. Ignoring this code can have severe implications, as it may lead to the airbag not deploying when needed, putting occupants at increased risk. It's vital for vehicle owners to understand that this issue can arise from various causes, including faulty sensors, damaged wiring, or issues within the airbag control module itself. Therefore, addressing DTC B1920 promptly is essential for ensuring your vehicle's safety features are operational.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B1920 is present:
- The airbag warning light remains illuminated on the dashboard, indicating a malfunction in the airbag system.
- The vehicle may exhibit a lack of airbag deployment during crash tests, which is a critical safety concern.
- Inconsistent warning messages may appear on the dashboard, sometimes flickering or showing intermittent alerts.
- Strange noises or clicks may be heard from the airbag module area during vehicle operation, suggesting internal issues.
- In some cases, the vehicle may experience electrical issues, such as non-functioning seatbelt sensors or other related components.
Possible Causes
Most common causes of B1920 (ordered by frequency):
- The most common cause of B1920 is a faulty passenger airbag sensor, present in about 40% of cases. This often occurs due to wear and tear or exposure to moisture.
- Another frequent cause is damaged wiring or connectors in the airbag circuit, accounting for approximately 25% of issues. This damage can happen due to accidents or poor installation.
- A third potential cause involves the airbag control module failing or malfunctioning, which can prevent proper communication within the airbag system.
- Less commonly, software issues in the vehicle's computer system can lead to false codes being triggered, making diagnosis more complex.
- In rare cases, tampering or aftermarket modifications to the airbag system can also lead to the B1920 code appearing.
B1920 Repair Costs
Cost Breakdown by Repair Type
Airbag Sensor Replacement
Replacing the faulty passenger airbag sensor to restore proper functionality.
- Total: $150 - $300
- Success rate: 85%
Wiring Repair
Repairing or replacing damaged wiring in the airbag system.
- Total: $100 - $250
- Success rate: 75%
Airbag Control Module Replacement
Replacing the airbag control module if found defective during testing.
- Total: $400 - $700
- Success rate: 90%
Money-Saving Tips for B1920
- 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 B1920 Diagnosis Process
Follow these systematic steps to accurately diagnose B1920. 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, which should take about 5-10 minutes
Step 2: Use the GeekOBD APP to perform an OBD2 scan - Retrieve all codes and freeze frame data to understand the fault context, which will take around 10-15 minutes
Step 3: Perform component testing - Use a multimeter or specific diagnostic tools to test suspected components such as the airbag module and sensors, expected to take 20-30 minutes
Step 4: Conduct a system function test - Verify proper operation after repairs and clear codes with the GeekOBD APP, taking about 10-15 minutes
Step 5: Road test verification - Drive the vehicle under various conditions to confirm repair success, which should take about 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: Honda Accord Airbag Sensor Replacement
Vehicle: 2013 Honda Accord, 75,000 miles
Problem: Customer reported the airbag light was on and received a B1920 code.
Diagnosis: Using the GeekOBD APP, the diagnostic revealed a faulty passenger airbag sensor.
Solution: Replaced the passenger airbag sensor and cleared the codes.
Cost: $220 (sensor $150, labor $70)
Result: Airbag light turned off and vehicle passed inspection.
Case Study 2: Ford Focus Wiring Repair
Vehicle: 2011 Ford Focus, 80,000 miles
Problem: Driver experienced intermittent airbag warning light and B1920 code.
Diagnosis: Visual inspection revealed frayed wiring in the airbag circuit.
Solution: Repaired the damaged wiring and secured all connections.
Cost: $150 (wiring repair and labor)
Result: Warning light extinguished and system functioned correctly after road testing.