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B1206 Infiniti Code - Diagnosis Sensor Unit

Quick Answer

The B1206 code in an Infiniti vehicle refers to an issue with the Diagnosis Sensor Unit. Common causes include Faulty Diagnosis Sensor Unit, Wiring or connection issues, Electrical problems. 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, Wiring or connection issues, Electrical problems.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1206 Infiniti Description

The B1206 code in an Infiniti vehicle refers to an issue with the Diagnosis Sensor Unit. This unit is responsible for monitoring various systems in the vehicle and detecting any malfunctions or irregularities. When this code is triggered, it indicates that there is a problem with the sensor unit, potentially affecting the vehicle's performance and safety.

OBDII Code B1206 Infiniti - Diagnosis Sensor Unit
B1206 Infiniti Code - Diagnosis Sensor Unit

Common Causes of B1206 Infiniti

  1. Faulty Diagnosis Sensor Unit
  2. Wiring or connection issues
  3. Electrical problems
  4. Software glitches
  5. Impact or damage to the sensor unit

Symptoms of B1206 Infiniti

  1. Dashboard warning light illuminated
  2. Inaccurate or erratic readings from various sensors
  3. Issues with the vehicle's stability control system
  4. Problems with the airbag system
  5. Engine performance issues

How to Fix B1206 Infiniti

  1. Retrieve the specific trouble codes using a diagnostic scanner to confirm the B1206 code.
  2. Inspect the Diagnosis Sensor Unit for any visible damage or signs of malfunction.
  3. Check the wiring and connections associated with the sensor unit for any issues.
  4. Test the sensor unit using a multimeter to determine if it is functioning correctly.
  5. Replace the Diagnosis Sensor Unit if necessary and clear the trouble codes from the vehicle's computer system.

Cost to Fix B1206 Infiniti

The typical repair costs for addressing the B1206 code in an Infiniti vehicle can vary depending on the specific issue and the extent of the repairs needed. In general, the cost of replacing the Diagnosis Sensor Unit can range from $200 to $500, including parts and labor. It is important to note that diagnostic time and labor rates at auto repair shops can vary, so it's recommended to check with local shops for a more accurate estimate. Labor rates typically range from $80 to $150 per hour, with rates potentially higher at dealerships or in metropolitan areas.

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.

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

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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