AutoCodes – Hyundai – B1391 Hyundai

B1391 Hyundai Code - Passenger Seat Track Position Sensor Short Or Short To Battery

Quick Answer

The Seat Track Position Sensor (STPS) located underneath the occupant seat detects the horizontal position of the occupant seat and delivers it to the Supplemental Restraint System Control Module (SRSCM). Common causes include Faulty Passenger Seat Track Position Sensor, Passenger Seat Track Position Sensor harness is open or shorted, Passenger Seat Track Position Sensor 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: B1391 Hyundai indicates Passenger Seat Track Position Sensor Short Or Short To Battery.
Common causes: Common causes include Faulty Passenger Seat Track Position Sensor, Passenger Seat Track Position Sensor harness is open or shorted, Passenger Seat Track Position Sensor 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 2,633

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Mar 20, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1391 Hyundai Description

The Seat Track Position Sensor (STPS) located underneath the occupant seat detects the horizontal position of the occupant seat and delivers it to the Supplemental Restraint System Control Module (SRSCM). The signal of STPS is one of the major parameters that determine the way dual output type airbag deploys. The SRSCM sets the Diagnostic Trouble Code (DTC) if it detects that the Seat Track Position Sensor is not to factory specifications.

OBDII Code B1391 Hyundai - Passenger Seat Track Position Sensor Short Or Short To Battery - AutoCodes.com — B1391 Hyundai Code - Passenger Seat Track Position Sensor Short Or Short To Battery

What does this mean?

What are the Possible Causes of the DTC B1391 Hyundai?

Faulty Passenger Seat Track Position Sensor
Passenger Seat Track Position Sensor harness is open or shorted
Passenger Seat Track Position Sensor circuit poor electrical connection
Faulty Supplemental Restraint System Control Module (SRSCM)

How to Fix the DTC B1391 Hyundai?

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 B1391 Hyundai 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 B1391 Hyundai code?

Need more information on how to fix the B1391 Hyundai code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1391 Hyundai 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 B1391 Hyundai Code

1. What are the common symptoms of OBDII code B1391 in a Hyundai related to the Passenger Seat Track Position Sensor Short or Short to Battery?

The common symptoms include the airbag light illuminating on the dashboard, potential loss of power to the passenger airbag, and diagnostic trouble code B1391 stored in the vehicle's computer.

2. What are the possible causes of OBDII code B1391 in a Hyundai indicating a Passenger Seat Track Position Sensor Short or Short to Battery?

The code B1391 can be triggered by a short circuit in the wiring harness connected to the passenger seat track position sensor or a malfunction within the sensor itself.

3. How can I diagnose the issue related to OBDII code B1391 in a Hyundai Passenger Seat Track Position Sensor Short or Short to Battery?

To diagnose the problem, you can use an OBDII scanner to read the specific trouble code, inspect the wiring harness for any visible damage, and test the passenger seat track position sensor for proper functionality.

4. Is it safe to drive a Hyundai with OBDII code B1391 indicating a Passenger Seat Track Position Sensor Short or Short to Battery?

It is not recommended to drive the vehicle with this code active, as it may compromise the proper functioning of the passenger airbag system in the event of a collision.

5. Can I repair OBDII code B1391 in a Hyundai Passenger Seat Track Position Sensor Short or Short to Battery myself?

If you have experience with automotive electrical systems, you may be able to repair the issue yourself by identifying and fixing the short circuit or replacing the faulty sensor. Otherwise, it is advisable to seek professional help.

6. What are the potential risks of ignoring OBDII code B1391 related to the Passenger Seat Track Position Sensor Short or Short to Battery in a Hyundai?

Ignoring this code can result in the passenger airbag not deploying correctly in case of an accident, posing a safety risk to the occupant in the front passenger seat.

7. Are there any temporary solutions to consider for OBDII code B1391 in a Hyundai indicating a Passenger Seat Track Position Sensor Short or Short to Battery?

There are no recommended temporary solutions for this issue, as it directly impacts the functionality of the passenger airbag system, which is crucial for occupant safety.

8. How much does it typically cost to repair OBDII code B1391 related to the Passenger Seat Track Position Sensor Short or Short to Battery in a Hyundai?

The cost of repairing this issue can vary depending on the extent of the damage and whether you choose to replace the sensor or repair the wiring harness. It's advisable to consult a professional for an accurate estimate.

9. Can a faulty Passenger Seat Track Position Sensor cause other issues in a Hyundai besides triggering OBDII code B1391?

Yes, a malfunctioning Passenger Seat Track Position Sensor can potentially cause other issues such as incorrect seat position detection, affecting comfort and safety features linked to the passenger seat.

10. How long does it typically take to repair OBDII code B1391 associated with the Passenger Seat Track Position Sensor Short or Short to Battery in a Hyundai?

The repair time can vary based on the complexity of the issue and the availability of parts. It is recommended to consult a mechanic for a more accurate assessment of the repair duration.