B1122 Nissan Code - Diagnosis Sensor Unit
Quick Answer
The Air Bag Diagnosis Sensor Unit detects the whole SRS electrical system and displays the malfunction either by illuminating or blinking the air bag warning lamp in the combination meter. Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit circuit poor electrical connection. 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
- B1122 Nissan indicates Diagnosis Sensor Unit.
- Common causes
- Common causes include Faulty Diagnosis Sensor Unit, Diagnosis Sensor Unit harness is open or shorted, Diagnosis Sensor Unit circuit poor electrical connection.
- 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.
Code B1122 Nissan Description
The Air Bag Diagnosis Sensor Unit contains the “G†sensors for both frontal and side collisions and spare battery function in case of main battery damaged in a collision.
What are the Possible Causes of the DTC B1122 Nissan?
- Faulty Diagnosis Sensor Unit
- Diagnosis Sensor Unit harness is open or shorted
- Diagnosis Sensor Unit circuit poor electrical connection
How to Fix the DTC B1122 Nissan?
Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.
What is the Cost to Diagnose the Code?
Labor: 1.0
To diagnose the B1122 Nissan code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.
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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 B1122 Nissan Code
1. What are the common symptoms of OBDII code B1122 in a Nissan related to the Diagnosis Sensor Unit?
The common symptoms include issues with the airbag system, such as the airbag warning light staying illuminated on the dashboard.
2. What could be causing the OBDII code B1122 related to the Diagnosis Sensor Unit in a Nissan?
The code B1122 is often caused by a malfunction or failure of the Diagnosis Sensor Unit itself.
3. How can I diagnose the Diagnosis Sensor Unit issue triggering OBDII code B1122 in my Nissan?
Diagnosing the Diagnosis Sensor Unit issue typically involves using a diagnostic scanner to read the fault codes, followed by testing the sensor unit for proper functionality.
4. Are there any repair tips for fixing OBDII code B1122 related to the Diagnosis Sensor Unit in a Nissan?
Repairing this issue may involve replacing the Diagnosis Sensor Unit with a new one, ensuring proper installation and calibration.
5. Can a DIY enthusiast tackle the repair of OBDII code B1122 related to the Diagnosis Sensor Unit in a Nissan?
While some experienced DIYers may be able to replace the Diagnosis Sensor Unit, it is recommended to seek professional help for proper diagnosis and repair.
6. Is it safe to continue driving my Nissan with OBDII code B1122 related to the Diagnosis Sensor Unit?
It is not recommended to drive your Nissan with unresolved airbag system issues indicated by OBDII code B1122, as it may compromise the safety of the vehicle occupants in the event of a collision.
7. How crucial is it to address OBDII code B1122 related to the Diagnosis Sensor Unit promptly?
Addressing this issue promptly is essential to ensure the proper functioning of the airbag system in your Nissan and maintain overall safety while driving.
8. Can resetting the OBDII code B1122 related to the Diagnosis Sensor Unit temporarily resolve the issue?
Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem with the Diagnosis Sensor Unit triggering the code.
9. Are there any recalls or technical service bulletins related to OBDII code B1122 in Nissan vehicles?
It is advisable to check with an authorized Nissan service center or visit the manufacturer's website to see if there are any recalls or technical service bulletins related to OBDII code B1122 and the Diagnosis Sensor Unit.
10. How much does it typically cost to repair OBDII code B1122 related to the Diagnosis Sensor Unit in a Nissan?
The cost of repairing OBDII code B1122 can vary depending on the exact cause of the issue, but it may involve parts and labor expenses that can range from a few hundred to over a thousand dollars.
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