B1206 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
- B1206 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 B1206 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 B1206 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 B1206 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 B1206 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 B1206 Nissan Code
1. What does the OBDII code B1206 mean on a Nissan?
The B1206 code refers to an issue with the Diagnosis Sensor Unit, which is part of the airbag or supplemental restraint system (SRS). It indicates a potential fault in the unit that needs attention.
2. What are the common symptoms of the B1206 code in a Nissan?
Common symptoms include the airbag warning light staying illuminated, the SRS system being disabled, and the potential for airbags not deploying in a collision.
3. What causes the B1206 code to appear on a Nissan?
The code can be caused by a faulty diagnosis sensor unit, corroded or damaged wiring, poor electrical connections, or an issue with the vehicle's SRS control module.
4. How do you diagnose the B1206 code on a Nissan?
Diagnosis involves using an OBDII scanner to confirm the code, inspecting the wiring and connectors for damage or corrosion, and testing the functionality of the diagnosis sensor unit.
5. Can I still drive my Nissan with the B1206 code?
While the vehicle may still be drivable, it is not safe to drive with this code because the airbag system may not function properly in the event of an accident.
6. How do you fix the B1206 code on a Nissan?
Repairs may include replacing the diagnosis sensor unit, repairing or replacing damaged wiring or connectors, or recalibrating the SRS system after repairs.
7. Where is the diagnosis sensor unit located in a Nissan?
The diagnosis sensor unit is typically located under the center console or beneath the front seats, depending on the specific Nissan model.
8. How much does it cost to fix the B1206 code on a Nissan?
The repair cost varies depending on the extent of the issue, but replacing the diagnosis sensor unit can cost between $300 and $600, excluding labor.
9. Can a weak battery cause the B1206 code to appear?
Yes, a weak or failing battery can sometimes cause communication errors in the SRS system and trigger the B1206 code.
10. Does the B1206 code require professional repair?
Yes, due to the safety-critical nature of the airbag system, it is highly recommended to have a certified technician diagnose and repair the issue.
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