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B1431 Infiniti Code - Right Seat Belt Pre-Tensioner Circuit

- Code Popularity: 2,434 Views
- Repair Importance Level: 3/3
- Repair Difficulty Level: 3/3
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What are the Possible Causes of the DTC B1431 Infiniti?

NOTE: The causes shown may not be a complete list of all potential problems, and it is possible that there may be other causes.
  • Faulty Right Seat Belt Pre-Tensioner
  • Right Seat Belt Pre-Tensioner harness is open or shorted
  • Right Seat Belt Pre-Tensioner circuit poor electrical connection
  • Faulty Air Bag Diagnosis Sensor Unit
⚠ Does your Infiniti have Safety Recalls? → Check here

How to Fix the DTC B1431 Infiniti?

Review the 'Possible Causes' mentioned above and visually examine the corresponding wiring harness and connectors. Ensure to check for any damaged components and inspect the connector pins for signs of being broken, bent, pushed out, or corroded.

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What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1431 Infiniti code, it typically requires 1.0 hour of labor. The specific diagnosis time and labor rates at auto repair shops can differ based on factors such as the location, make and model of the vehicle, and even the engine type. It is common for most auto repair shops to charge between $75 and $150 per hour.

What are Code Possible Symptoms?

  • Air Bag Warning Light ON

Code B1431 Infiniti Description

The Right Seat Belt Pre-Tensioner is wired to the Air Bag Diagnosis Sensor Unit. The Air Bag Diagnosis Sensor Unit will monitor for opens and shorts in detected lines to the Right Seat Belt Pre-Tensioner.

OBDII Code B1431 Infiniti - Right Seat Belt Pre-Tensioner Circuit - AutoCodes.com
B1431 Infiniti Code - Right Seat Belt Pre-Tensioner Circuit

Need More Information on the Code?

Need more information on how to fix the B1431 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1431 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.

Code B1431 Infiniti comments

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