AutoCodesInfiniti – B1001 Infiniti

B1001 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
B1001 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 3,732
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 B1001 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 B1001 Infiniti - Diagnosis Sensor Unit - AutoCodes.com
B1001 Infiniti Code - Diagnosis Sensor Unit

What are the Possible Causes of the DTC B1001 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 B1001 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 B1001 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 B1001 Infiniti code?

Need more information on how to fix the B1001 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1001 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 B1001 Infiniti Code

1. What are the common symptoms of OBDII code B1001 in an Infiniti?

- The common symptoms include the airbag warning light illuminating on the dashboard and potential issues with the airbag system.

2. What typically causes the OBDII code B1001 in an Infiniti?

- The code B1001 is often triggered by a malfunction or failure in the Diagnosis Sensor Unit (DSU) within the airbag system.

3. How can I diagnose the Diagnosis Sensor Unit issue causing OBDII code B1001 in my Infiniti?

- To diagnose the DSU issue, a professional diagnostic tool capable of accessing airbag system codes is needed to pinpoint the exact problem.

4. Is it safe to drive my Infiniti with OBDII code B1001 present?

- It is not recommended to drive the vehicle with the airbag warning light on, as the airbag system may not function correctly in the event of a collision.

5. Can I reset the OBDII code B1001 in my Infiniti without fixing the underlying issue?

- Resetting the code without addressing the root cause (DSU issue) will likely result in the code reappearing once the system detects the problem again.

6. Are there any DIY repair tips for fixing OBDII code B1001 in an Infiniti?

- Due to the critical nature of the airbag system, it is advisable to have a qualified technician inspect and repair the DSU to ensure proper functionality.

7. How much does it typically cost to repair the Diagnosis Sensor Unit related to OBDII code B1001 in an Infiniti?

- Repair costs can vary depending on the extent of the issue and the labor rates of the repair shop, but expect to budget for parts and labor for the DSU replacement.

8. What happens if the OBDII code B1001 in my Infiniti is ignored?

- Ignoring the B1001 code can compromise the proper operation of the airbag system, potentially putting occupants at risk in the event of a collision.

9. Can a faulty battery or electrical system cause OBDII code B1001 to appear in an Infiniti?

- While a weak battery or electrical issues can sometimes trigger airbag system codes, OBDII code B1001 is specifically related to the Diagnosis Sensor Unit malfunction.

10. Should I attempt to repair the Diagnosis Sensor Unit related to OBDII code B1001 myself?

- Due to the complexity and critical safety implications of the airbag system, it is recommended to have a professional technician with experience in airbag system repairs address the DSU issue.

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