Quick Answer
B0155 means: B0155 indicates a fault with the passenger airbag sensor circuit.
Can I drive with B0155? Immediate attention is advised to ensure airbag functionality.
Common Questions
What does B0155 mean and how does it affect my car?
The B0155 code indicates a problem with the passenger airbag sensor. This means that the airbag system might not deploy during a crash, leaving passengers unprotected. It's critical to address this issue immediately for your safety.
What are the most common causes of B0155 and how much does it cost to fix?
Common causes include a faulty passenger airbag sensor (70% likelihood), damaged wiring (20%), or a malfunctioning airbag control module (3%). Repair costs can range from $150 for a sensor replacement to $600 for a module replacement.
Can I drive my car with B0155 or should I stop immediately?
It is advisable to not drive the vehicle until the issue is resolved, as the airbag may not function correctly in the event of an accident, posing a serious safety risk.
How can I diagnose B0155 myself using GeekOBD APP?
Using the GeekOBD APP, you can perform an OBD2 scan to retrieve the B0155 code. Look for freeze frame data to understand the conditions under which the fault occurred, and follow the diagnostic steps to identify the issue.
What vehicles are most commonly affected by B0155?
The B0155 code is commonly found in 2015-2018 Honda Accord models, but it can also affect other vehicles with similar airbag systems. Always check for any recalls or technical service bulletins related to your specific vehicle.
How can I prevent B0155 from happening again?
Regular vehicle maintenance, including checking the airbag system and wiring for damage, can help prevent B0155. Additionally, avoid any aftermarket modifications that could interfere with the airbag system.
What is B0155?
The B0155 diagnostic trouble code indicates a fault within the airbag system, specifically related to the passenger airbag sensor. This code is most commonly seen in vehicles like the 2015-2018 Honda Accord, but can also appear in other models across various manufacturers. The airbag system is crucial for safety, as it deploys during a collision to protect occupants. When the B0155 code triggers, it means there’s a malfunction in the airbag sensor circuit, which could prevent the airbag from deploying correctly during an accident. This can lead to serious safety issues, as passengers may not be adequately protected in the event of a crash. Drivers may notice the airbag warning light illuminated on the dashboard, indicating that there is a problem that needs immediate attention. Ignoring this code can lead to increased repair costs in the future and, more importantly, put the safety of the vehicle's occupants at risk. Therefore, it's crucial to address this code promptly to ensure that the airbag system functions as it should.
System: B - Body (Airbags, Lighting, Security, Climate Control)
Symptoms
Common symptoms when B0155 is present:
- The airbag warning light on the dashboard stays illuminated, signaling a malfunction in the airbag system.
- The vehicle's airbag may fail to deploy during a collision, which poses a serious safety risk to passengers.
- In some cases, the vehicle may exhibit additional electrical issues, such as intermittent warning lights or malfunctioning dashboard indicators.
- You may experience a decrease in vehicle resale value due to safety concerns associated with the airbag system.
- Drivers may also report unusual noises or warning sounds when starting the vehicle, indicating potential issues with the airbag system.
Possible Causes
Most common causes of B0155 (ordered by frequency):
- The most common cause of the B0155 code (70%) is a faulty passenger airbag sensor, which can wear out over time or become damaged.
- A second cause (20%) could be damaged wiring in the airbag system, which may occur due to wear and tear or improper installation during prior repairs.
- Corrosion at electrical connectors is another potential cause (5%), which can hinder signal transmission within the airbag system.
- Less commonly, a malfunctioning airbag control module could trigger this error code (3%). This module is responsible for managing the airbag system operations.
- Rarely, software issues in newer models may cause a false reading for the B0155 code (2%). Updating the vehicle's software may resolve this.
B0155 Repair Costs
Cost Breakdown by Repair Type
Passenger Airbag Sensor Replacement
Replace the faulty passenger airbag sensor to restore functionality.
- Total: $150 - $400
- Success rate: 95%
Wiring Repair
Repair or replace damaged wiring in the airbag system.
- Total: $100 - $250
- Success rate: 80%
Airbag Control Module Replacement
Replace the malfunctioning airbag control module if necessary.
- Total: $300 - $600
- Success rate: 70%
Money-Saving Tips for B0155
- 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 B0155 Diagnosis Process
Follow these systematic steps to accurately diagnose B0155. Each step builds on the previous one to ensure accurate diagnosis.
Step 1: Step 1: Initial visual inspection - Check for obvious signs of damage such as frayed wires, loose connections, or corrosion in the airbag system components (5-10 minutes)
Step 1: Initial visual inspection - Check for obvious signs of damage such as frayed wires, loose connections, or corrosion in the airbag system components (5-10 minutes).
Step 2: Step 2: Use the GeekOBD APP to perform an OBD2 scan - Retrieve all trouble codes and freeze frame data to understand the fault context (10-15 minutes)
Step 2: Use the GeekOBD APP to perform an OBD2 scan - Retrieve all trouble codes and freeze frame data to understand the fault context (10-15 minutes).
Step 3: Step 3: Component testing - With a multimeter, test the passenger airbag sensor and wiring to ensure they are functioning correctly (20-30 minutes)
Step 3: Component testing - With a multimeter, test the passenger airbag sensor and wiring to ensure they are functioning correctly (20-30 minutes).
Step 4: Step 4: System function test - After any necessary repairs, verify proper operation of the airbag system and clear the codes using the GeekOBD APP (10-15 minutes)
Step 4: System function test - After any necessary repairs, verify proper operation of the airbag system and clear the codes using the GeekOBD APP (10-15 minutes).
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the airbag system is functioning correctly and that the warning light does not reappear (15-20 minutes)
Step 5: Road test verification - Drive the vehicle under various conditions to confirm that the airbag system is functioning correctly and that the warning light does not reappear (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: Passenger Airbag Sensor Replacement in 2016 Honda Accord
Vehicle: 2016 Honda Accord, 50,000 miles
Problem: Customer reported airbag warning light illuminated.
Diagnosis: After scanning with GeekOBD APP, the B0155 code was retrieved. Visual inspection revealed a faulty passenger airbag sensor.
Solution: Replaced the passenger airbag sensor and cleared the codes.
Cost: $250 (including parts and labor)
Result: The airbag warning light was cleared, and the system was tested successfully.
Case Study 2: Wiring Repair on 2017 Honda CR-V
Vehicle: 2017 Honda CR-V, 40,000 miles
Problem: Customer noticed intermittent airbag warning light.
Diagnosis: Using the GeekOBD APP, B0155 was confirmed. Wiring inspection showed corrosion at a connector.
Solution: Repaired the wiring and applied corrosion inhibitor.
Cost: $150 (including parts and labor)
Result: The airbag system was functioning correctly, and the warning light did not reappear.