B1206 Infiniti 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 Infiniti 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 Infiniti 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 Infiniti?
- 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 Infiniti?
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 Infiniti 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 B1206 Infiniti 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 B1206 Infiniti Code
1. What does the OBDII code B1206 mean on an Infiniti?
The B1206 code indicates a fault related to the Diagnosis Sensor Unit (DSU), which is part of the airbag or supplemental restraint system (SRS).
2. What are common symptoms of the B1206 code in an Infiniti?
Symptoms include the airbag warning light staying on, a failure for the airbag system to deploy in a crash, and potential stored error codes in the SRS module.
3. What causes the B1206 code to appear on an Infiniti?
Causes may include a faulty Diagnosis Sensor Unit, damaged wiring or connectors, corrosion in the SRS circuit, or a failed airbag control module.
4. Can I drive my Infiniti with the B1206 code active?
While the vehicle may still be drivable, the airbag system may not function properly, which can pose a serious safety risk in the event of an accident.
5. How do I diagnose the B1206 code on my Infiniti?
Start by using an OBDII scanner to confirm the code, then inspect the wiring and connectors to the Diagnosis Sensor Unit, and test the unit for proper operation using factory-recommended procedures.
6. What is the Diagnosis Sensor Unit in an Infiniti?
The Diagnosis Sensor Unit acts as the central control for the airbag system, monitoring and controlling deployment based on crash inputs and sensor data.
7. How do I fix the B1206 code on an Infiniti?
Repairs may include replacing the Diagnosis Sensor Unit, repairing damaged wiring or connectors, clearing corrosion, or recalibrating the SRS system with a scan tool.
8. How much does it cost to repair the B1206 code on an Infiniti?
Repair costs can vary widely, from $100 for wiring repairs to over $500 for replacing the Diagnosis Sensor Unit, depending on labor rates and parts availability.
9. Can a weak battery cause the B1206 code in an Infiniti?
Yes, a weak or failing battery can cause voltage issues, potentially triggering the B1206 code or other SRS-related errors.
10. Do I need to clear the B1206 code after repairs?
Yes, after completing repairs, use an OBDII scanner to clear the code and verify that the airbag system is functioning correctly.
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