B1120 Code - Left Air Bag Satellite Sensor
Quick Answer
The B1120 code refers to an issue with the Left Air Bag Satellite Sensor in the vehicle's airbag system. Common causes include Faulty Left Air Bag Satellite Sensor, Wiring issues or a short circuit in the airbag system, Blown fuse related to the airbag system. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
- What it means
- B1120 indicates Left Air Bag Satellite Sensor.
- Common causes
- Common causes include Faulty Left Air Bag Satellite Sensor, Wiring issues or a short circuit in the airbag system, Blown fuse related to the airbag system.
- Severity
- High - diagnose this code as soon as possible.
- Can I drive?
- Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.
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Code B1120 Description
The B1120 code refers to an issue with the Left Air Bag Satellite Sensor in the vehicle's airbag system. This sensor is responsible for detecting impacts or collisions on the left side of the vehicle and triggering the deployment of the airbag to protect the driver or passengers in the event of a crash. When this sensor malfunctions or fails to work properly, it can compromise the effectiveness of the airbag system, potentially putting occupants at risk in the event of an accident.
Common Causes of B1120
- Faulty Left Air Bag Satellite Sensor
- Wiring issues or a short circuit in the airbag system
- Blown fuse related to the airbag system
- Problem with the airbag control module
- Impact or collision that damaged the Left Air Bag Satellite Sensor
Symptoms of B1120
- Airbag warning light illuminated on the dashboard
- Left side airbag not deploying in a crash
- Diagnostic trouble code B1120 stored in the vehicle's computer
- Inconsistent or erratic airbag system behavior
How to Fix B1120
- Diagnose the issue by using a scan tool to retrieve the B1120 code and identify the specific problem with the Left Air Bag Satellite Sensor.
- Inspect the wiring and connections related to the sensor to check for any signs of damage or corrosion. Repair or replace any damaged wiring as needed.
- Test the Left Air Bag Satellite Sensor to ensure it is functioning correctly. Replace the sensor if it is found to be faulty.
- Clear the B1120 code from the vehicle's computer using a scan tool after the repair has been completed.
- Perform a thorough test drive to verify that the airbag system is working properly and that the airbag warning light has been reset.
Cost to Fix B1120
The typical repair costs for addressing a B1120 code related to the Left Air Bag Satellite Sensor can range from $200 to $500, including parts and labor. However, it is important to note that the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. Most auto repair shops commonly charge between $80 and $150 per hour for labor. Rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less. It is advisable to check local rates for a more precise estimate before proceeding with the repair.
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Code B1120 Information for Specific Makes
- B1120 Infiniti — Left Air Bag Satellite Sensor
- B1120 Nissan — Left Air Bag Satellite Sensor
Precautions for SRS “AIR BAG” and “SEAT BELT PRE-TENSIONER” Service
- Never probe the electrical connectors on air bag, side air curtain modules or seat belts.
- Never disassemble or tamper with safety belt buckle/retractor pretensioners, adaptive load limiting retractors, safety belt inflators, or probe the electrical connectors.
- Do not use electrical test equipment to check SRS circuits unless instructed to in this Service Manual.
- Before servicing the SRS, turn ignition switch OFF, disconnect both battery cables and wait at least 3 minutes. For approximately 3 minutes after the cables are removed, it is still possible for the air bag and seat belt pre-tensioner to deploy. Therefore, do not work on any SRS connectors or wires until at least 3 minutes have passed.
Failure to follow this instruction may result in the accidental deployment of these modules, which increases the risk of serious personal injury or death.
Frequently Asked Questions about B1120 Code
1. What are the common symptoms of OBDII code B1120 (Left Air Bag Satellite Sensor)?
- Common symptoms include the airbag warning light illuminating on the dashboard and a potential fault with the left airbag satellite sensor system.
2. What is the main cause of OBDII code B1120?
- The main cause of OBDII code B1120 is typically a malfunction or failure in the left airbag satellite sensor, leading to a fault in the airbag system.
3. How can I diagnose the issue related to OBDII code B1120?
- Diagnosis involves using a scan tool to retrieve the specific fault code, inspecting the left airbag satellite sensor for damage or loose connections, and testing the sensor's functionality.
4. Can a DIY enthusiast repair OBDII code B1120 at home?
- Repairing OBDII code B1120 may require specialized tools and knowledge of airbag systems, so it is recommended to consult a professional mechanic for proper diagnosis and repair.
5. Is it safe to drive with OBDII code B1120 present?
- It is not recommended to drive with OBDII code B1120 present, as it indicates a potential issue with the left airbag satellite sensor, compromising the safety of the airbag system in the event of a collision.
6. How much does it typically cost to repair OBDII code B1120?
- The cost of repairing OBDII code B1120 can vary depending on the extent of the issue, but it may involve replacing the left airbag satellite sensor or addressing wiring/connectivity issues.
7. Are there any preventive measures to avoid OBDII code B1120 from occurring?
- Regular maintenance and inspection of the airbag system, including the left airbag satellite sensor, can help prevent issues that may trigger OBDII code B1120.
8. Can weather conditions affect OBDII code B1120?
- Extreme weather conditions or exposure to moisture can potentially impact the performance of the left airbag satellite sensor and contribute to triggering OBDII code B1120.
9. What are the risks of ignoring OBDII code B1120?
- Ignoring OBDII code B1120 can result in the airbag system not deploying properly in the event of a collision, increasing the risk of injury to vehicle occupants.
10. How long does it take to repair OBDII code B1120?
- The repair time for OBDII code B1120 can vary depending on the exact cause of the issue, but it typically takes a few hours to diagnose and repair the left airbag satellite sensor problem.
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