B0629 - Passenger Airbag Status Circuit Malfunction in Honda, Ford, and Toyota Models

Quick Answer

B0629 means: B0629 indicates a malfunction in the passenger airbag status circuit, potentially disabling the airbag.

Fix: Check and replace faulty components Cost: $100 - $300 Time: 90-180 minutes

Can I drive with B0629? Address this issue immediately to ensure passenger safety.

Common Questions

What does B0629 mean and how does it affect my car?

The B0629 code indicates a problem with the passenger airbag status circuit. This can prevent the airbag from deploying during an accident, posing a significant safety risk. It’s essential to have this issue diagnosed and repaired as soon as possible to ensure that all safety features of your vehicle are functional.

What are the most common causes of B0629 and how much does it cost to fix?

Common causes of B0629 include faulty wiring, a malfunctioning airbag control module, or a defective passenger seat occupancy sensor. Repair costs can range from $100 for minor wiring repairs to $600 for replacing the airbag control module, depending on the severity of the issue.

Can I drive my car with B0629 or should I stop immediately?

It is not recommended to drive your vehicle with a B0629 code, as this indicates that the passenger airbag may not deploy in an accident. It's best to have the vehicle inspected and repaired immediately to ensure passenger safety.

How can I diagnose B0629 myself using GeekOBD APP?

Using the GeekOBD APP, you can perform a thorough OBD2 scan to retrieve the B0629 code along with any related codes. You can also access freeze-frame data to understand the conditions that led to the error. This information can help you identify whether the issue is electrical or mechanical.

What vehicles are most commonly affected by B0629?

B0629 is commonly found in vehicles like the 2015-2018 Honda Accord, Ford Explorer, and Toyota Camry. It's important to check for any manufacturer recalls or Technical Service Bulletins (TSBs) related to airbag systems for these models.

How can I prevent B0629 from happening again?

Regular maintenance checks on your airbag system, including visual inspections of wiring and connections, can help prevent B0629. Keeping your vehicle's software up-to-date and addressing any issues promptly can also reduce the risk of this code appearing in the future.

What is B0629?

DTC B0629 indicates a malfunction in the passenger airbag status circuit. This diagnostic trouble code is primarily related to the airbag system and is triggered when the vehicle's onboard diagnostic system detects a fault in the circuit responsible for monitoring the status of the passenger airbag. It's crucial to understand that this code does not just turn on a warning light; it signifies a potential safety risk. Vehicles equipped with airbags rely on the proper functioning of these circuits to ensure that the airbags deploy correctly during a collision. If the system detects a malfunction, it may disable the passenger airbag, increasing the risk of injury in the event of an accident. Commonly found in models like the 2015-2018 Honda Accord, Ford Explorer, and Toyota Camry, the B0629 code can stem from various issues, including faulty wiring, a malfunctioning airbag control module, or even a bad passenger seat sensor. If you're experiencing this code, it's vital to address it promptly to maintain the safety features of your vehicle. Ignoring this code could lead to costly repairs down the line, especially if it results in an accident where the airbag fails to deploy as intended.

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

Symptoms

Common symptoms when B0629 is present:

  • The airbag warning light remains illuminated on the dashboard, indicating an issue with the airbag system.
  • You may notice a message on the dashboard stating 'Airbag Off' or 'Passenger Airbag Disabled', which means the airbag is not operational.
  • Inconsistent airbag functionality, where the airbag does not deploy during a simulated crash test or diagnostic check.
  • Unusual noises coming from the passenger side, which could indicate wiring issues or a malfunctioning airbag module.
  • The passenger seat may exhibit erratic behavior, such as moving unexpectedly or not registering occupant weight correctly.

Possible Causes

Most common causes of B0629 (ordered by frequency):

  1. Faulty wiring or connections (50% likelihood) - Damaged wires or corroded connectors in the airbag circuit can cause B0629.
  2. Malfunctioning airbag control module (30% likelihood) - The central unit that controls airbag deployment may fail, leading to this code.
  3. Defective passenger seat occupancy sensor (15% likelihood) - If the sensor fails to detect whether a passenger is present, it may trigger this code.
  4. Less common but serious cause: Faulty airbag deployment circuit (5% likelihood) - This could prevent the airbag from deploying altogether.
  5. Rare cause: Software issues in the airbag control module - Occasionally, a software glitch can lead to this diagnostic code.

B0629 Repair Costs

Cost Breakdown by Repair Type

Wiring Repair

Repairing damaged wiring or connectors in the airbag circuit.

  • Total: $100 - $300
  • Success rate: 85%
Airbag Control Module Replacement

Replacing a faulty airbag control module to restore functionality.

  • Total: $300 - $600
  • Success rate: 90%
Passenger Seat Sensor Replacement

Replacing the passenger seat occupancy sensor that is malfunctioning.

  • Total: $150 - $400
  • Success rate: 80%
Money-Saving Tips for B0629
  • 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 B0629 Diagnosis Process

Follow these systematic steps to accurately diagnose B0629. 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, such as the airbag control module and seat sensors (20-30 minutes)

Step 3: Component testing - Use a multimeter or specific diagnostic tools to test suspected components, such as the airbag control module and seat sensors (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 to ensure the issue is resolved (10-15 minutes)

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: Step 5: Road test verification - Drive the vehicle under various conditions to confirm the success of the repair and ensure safety features are operational (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the success of the repair and ensure safety features are operational (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: Honda Accord Airbag System Repair

Vehicle: 2017 Honda Accord, 45,000 miles

Problem: Customer reported airbag warning light was on and received B0629 code.

Diagnosis: Initial inspection revealed damaged wiring in the passenger side airbag circuit.

Solution: Replaced damaged wiring and connectors, cleared the code, and conducted a system function test.

Cost: $200 (parts and labor)

Result: After repairs, the airbag warning light was off, and the system functioned correctly.

Case Study 2: Ford Explorer Seat Sensor Replacement

Vehicle: 2016 Ford Explorer, 60,000 miles

Problem: Customer noticed passenger airbag was disabled; B0629 code was present.

Diagnosis: Testing showed a faulty seat occupancy sensor was failing to detect the passenger.

Solution: Replaced the passenger seat occupancy sensor and recalibrated the airbag system.

Cost: $350 (including parts and labor)

Result: Post-repair, the airbag system was functioning properly with no warning lights.

Diagnose B0629

Use GeekOBD APP for professional diagnosis!

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Code Information

Code: B0629
System: Body (Airbags, Lighting, Security, Climate Control)
Severity: HIGH
Category: Body Codes