AutoCodesInfiniti – B1031 Infiniti

B1031 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
B1031 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.
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Code Popularity 1,716
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Mar 11, 2021
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Code B1031 Infiniti Description

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. The Air Bag Diagnosis Sensor Unit detects a shock that exceeds specified level and watches such systems as the driver and passenger air bag, side air bag, curtain air bag, pre-tensioner seat belts and Occupant Classification System (OCS) operate properly.
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.
OBDII Code B1031 Infiniti - Diagnosis Sensor Unit - AutoCodes.com
B1031 Infiniti Code - Diagnosis Sensor Unit

What are the Possible Causes of the DTC B1031 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 B1031 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 B1031 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 B1031 Infiniti code?

Need more information on how to fix the B1031 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1031 Infiniti code diagnosed by a professional: Find a repair shop in your area

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 B1031 Infiniti Code

1. What are the common symptoms of OBDII code B1031 in an Infiniti?

The common symptoms of OBDII code B1031 in an Infiniti include issues with the airbag system, such as the airbag warning light staying illuminated on the dashboard.

2. What is the likely cause of OBDII code B1031 in an Infiniti?

The likely cause of OBDII code B1031 in an Infiniti is a fault in the Diagnosis Sensor Unit, which is responsible for monitoring the airbag system's operation.

3. How can I diagnose OBDII code B1031 in my Infiniti?

Diagnosing OBDII code B1031 in an Infiniti requires a professional OBDII scanner to read the specific fault code and pinpoint the issue with the Diagnosis Sensor Unit.

4. Can I reset OBDII code B1031 in my Infiniti without fixing the underlying issue?

Resetting OBDII code B1031 without addressing the underlying issue with the Diagnosis Sensor Unit will likely result in the code reappearing and the airbag system not functioning properly.

5. Is it safe to drive my Infiniti with OBDII code B1031 present?

It is not recommended to drive your Infiniti with OBDII code B1031 present, as this indicates a potential problem with the airbag system that could compromise your safety in the event of an accident.

6. Are there any DIY repair tips for fixing OBDII code B1031 in an Infiniti?

Repairing OBDII code B1031 in an Infiniti typically requires professional intervention due to the complexity of the airbag system and the specialized tools needed for diagnosis and repair.

7. How much does it cost to repair OBDII code B1031 in an Infiniti?

The cost of repairing OBDII code B1031 in an Infiniti can vary depending on the extent of the issue with the Diagnosis Sensor Unit and any additional repairs or replacements needed for the airbag system.

8. Can OBDII code B1031 be caused by a loose connection or wiring issue in an Infiniti?

Yes, OBDII code B1031 in an Infiniti can be triggered by a loose connection or wiring issue affecting the Diagnosis Sensor Unit's functionality.

9. Will disconnecting the battery reset OBDII code B1031 in an Infiniti?

Disconnecting the battery may temporarily clear the code, but it is not a permanent solution as the underlying issue with the Diagnosis Sensor Unit needs to be addressed for a complete repair.

10. How long does it take to repair OBDII code B1031 in an Infiniti?

The repair time for OBDII code B1031 in an Infiniti can vary depending on the exact cause of the issue, but it may take a few hours to a full day for professional diagnosis and repair.

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