B1126 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
- B1126 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 B1126 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 B1126 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 B1126 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 B1126 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.
Need more information about the B1126 Nissan code?
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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 B1126 Nissan Code
1. What does the OBDII code B1126 for Nissan indicate?
The code B1126 specifically refers to a fault in the Diagnosis Sensor Unit in Nissan vehicles.
2. What are the common symptoms of a B1126 Diagnosis Sensor Unit issue?
Common symptoms include airbag warning lights on the dashboard, non-functional airbags, and potential issues with the vehicle's safety system.
3. What are the possible causes of a B1126 Diagnosis Sensor Unit error in a Nissan?
Causes can vary but may include faulty wiring connections, damaged sensors, or issues with the airbag control module.
4. How can I diagnose a B1126 code related to the Diagnosis Sensor Unit in my Nissan?
Diagnosis typically involves using an OBDII scanner to retrieve the specific fault code and then inspecting the sensor unit, wiring, and related components for any visible damage or issues.
5. Can I repair a B1126 Diagnosis Sensor Unit problem in my Nissan myself?
While some basic inspections and wiring checks can be done by DIY enthusiasts, diagnosing and repairing airbag system issues should be left to professionals due to the critical safety implications.
6. Is it safe to drive my Nissan with a B1126 code related to the Diagnosis Sensor Unit?
It is not recommended to drive the vehicle with an unresolved airbag system issue as it may compromise safety in the event of a collision.
7. Are there any temporary fixes for a B1126 Diagnosis Sensor Unit problem in a Nissan?
Temporary fixes are not advisable for airbag system issues. It is crucial to address the root cause promptly to ensure the system functions correctly in emergencies.
8. How much does it typically cost to repair a B1126 Diagnosis Sensor Unit fault in a Nissan?
Repair costs can vary depending on the exact cause of the issue and whether any components need replacement. It is best to consult a professional for an accurate estimate.
9. Can a B1126 Diagnosis Sensor Unit error be triggered by other underlying issues in a Nissan?
While the code typically points to a problem with the Diagnosis Sensor Unit itself, underlying issues with the airbag system or related components can sometimes lead to this error code.
10. Is it necessary to reset the OBDII system after repairing a B1126 Diagnosis Sensor Unit problem in a Nissan?
Yes, it is recommended to clear the error code using an OBDII scanner after resolving the underlying issue to ensure the system registers the repair and functions properly.
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