B1120 Infiniti Code - Left Air Bag Satellite Sensor
Quick Answer
The B1120 code for Infiniti vehicles refers to an issue with the left airbag satellite sensor. Common causes include Faulty left airbag satellite sensor, Wiring or connection issues with the sensor, Impact or damage to the sensor from a previous collision. 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 Infiniti indicates Left Air Bag Satellite Sensor.
- Common causes
- Common causes include Faulty left airbag satellite sensor, Wiring or connection issues with the sensor, Impact or damage to the sensor from a previous collision.
- 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 Infiniti Description
The B1120 code for Infiniti vehicles refers to an issue with the left airbag satellite sensor. This sensor is a crucial component of the vehicle's airbag system, responsible for detecting impacts and deploying the airbags to protect occupants in the event of a collision. When this sensor malfunctions or fails, it can compromise the overall safety of the vehicle.
Common Causes of B1120 Infiniti
- Faulty left airbag satellite sensor.
- Wiring or connection issues with the sensor.
- Impact or damage to the sensor from a previous collision.
- Corrosion or moisture intrusion affecting the sensor.
- Issues with the airbag control module.
Symptoms of B1120 Infiniti
- Airbag warning light illuminated on the dashboard.
- Inconsistent or delayed deployment of airbags in a crash.
- Fault codes related to the airbag system stored in the vehicle's computer.
- Loss of communication with the airbag control module.
How to Fix B1120 Infiniti
- Diagnose the B1120 code using a professional OBD-II scanner to confirm the issue with the left airbag satellite sensor.
- Inspect the wiring and connections to the sensor for any damage or corrosion.
- Replace the left airbag satellite sensor if it is found to be faulty.
- Clear the fault codes from the vehicle's computer and perform a test to ensure the airbag system is functioning properly.
- Reset the airbag warning light on the dashboard if necessary.
Cost to Fix B1120 Infiniti
The typical repair costs for addressing the B1120 code on an Infiniti vehicle can vary depending on the specific model and year. However, as a rough estimate, replacing the left airbag satellite sensor and addressing any related issues could range from $200 to $500, including parts and labor. It's important to note that labor rates at auto repair shops can vary, with hourly rates typically ranging from $80 to $150. Additionally, the cost of the sensor itself can vary based on the vehicle's make and model. For a more accurate estimate, it's recommended to consult with a local auto repair shop.
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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 Infiniti Code
1. What does the OBDII code B1120 mean on an Infiniti?
The B1120 code indicates an issue with the Left Air Bag Satellite Sensor, which monitors crash forces and communicates with the airbag control module.
2. What are the symptoms of a B1120 code on an Infiniti?
Common symptoms include the airbag warning light illuminating on the dashboard and the airbag system potentially being disabled.
3. What causes the B1120 code to appear?
Causes can include a faulty Left Air Bag Satellite Sensor, damaged wiring or connectors, or a malfunction in the airbag control module.
4. Can I drive my Infiniti with a B1120 code?
While the vehicle may still be drivable, the airbag system may not deploy during an accident, posing a serious safety risk.
5. How do I diagnose the B1120 code on my Infiniti?
Diagnosis involves checking the wiring and connectors for damage, testing the Left Air Bag Satellite Sensor, and using a scan tool to verify the code.
6. How do I fix the B1120 code on an Infiniti?
Repairs may include replacing the Left Air Bag Satellite Sensor, repairing damaged wiring, or resetting the airbag system with a scan tool.
7. How much does it cost to fix the B1120 code?
The cost can vary, but replacing the sensor typically ranges from $200 to $400, including parts and labor.
8. Can a B1120 code be triggered by an accident?
Yes, the code can be triggered if the sensor detects a crash or if the sensor is damaged during an impact.
9. Do I need to replace the airbag control module to fix the B1120 code?
Not necessarily. The module is usually fine unless it has been specifically diagnosed as faulty.
10. Can clearing the B1120 code with a scan tool fix the issue?
Clearing the code may turn off the warning light temporarily, but the underlying problem must be fixed to prevent the code from returning.
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