Engine-CodesGeneric – B1B91

B1B91 Code - Driver Seat Track Position Sensor Configuration Mismatch

Quick Answer

The B1B91 diagnostic trouble code (DTC) indicates a driver seat track position sensor configuration mismatch. Common causes include Faulty seat track position sensor, Wiring issues in the sensor circuit, Malfunction in the seat adjustment mechanism. 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
B1B91 indicates Driver Seat Track Position Sensor Configuration Mismatch.
Common causes
Common causes include Faulty seat track position sensor, Wiring issues in the sensor circuit, Malfunction in the seat adjustment mechanism.
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.
Table of contents Created and updated by William Orellana on Sep 10, 2024
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Code B1B91 Description

The B1B91 diagnostic trouble code (DTC) indicates a driver seat track position sensor configuration mismatch. This means that there is a discrepancy between the actual position of the driver's seat and the position that the sensor is registering. The seat track position sensor is responsible for detecting the position of the driver's seat and sending this information to the vehicle's computer system. When there is a configuration mismatch, it can lead to inaccurate seat adjustments, compromising the driver's comfort and safety.

OBDII Code B1B91 - Driver Seat Track Position Sensor Configuration Mismatch
B1B91 Code - Driver Seat Track Position Sensor Configuration Mismatch

Common Causes of B1B91

  1. Faulty seat track position sensor
  2. Wiring issues in the sensor circuit
  3. Malfunction in the seat adjustment mechanism
  4. Corrosion or damage to sensor connectors
  5. Electronic control module (ECM) software issues

Symptoms of B1B91

  1. Inaccurate seat adjustments
  2. Seat not moving when adjusting
  3. Difficulty reaching pedals or steering wheel
  4. Malfunction of airbag system

How to Fix B1B91

  1. Diagnostic Testing: Use a diagnostic scanner to retrieve the specific error codes and determine the root cause of the configuration mismatch.
  2. Inspection: Inspect the seat track position sensor, wiring, and connectors for any signs of damage or corrosion.
  3. Repair or Replace Sensor: If the sensor is faulty, replace it with a new one and ensure proper calibration.
  4. Repair Wiring: Address any wiring issues in the sensor circuit and repair or replace damaged wires as needed.
  5. Reset ECM: Reset the electronic control module (ECM) to clear the error codes and recalibrate the seat track position sensor.

Cost to Fix B1B91

The typical repair costs for addressing a driver seat track position sensor configuration mismatch can range from $200 to $500, including parts and labor. However, the specific diagnosis time and labor rates at auto repair shops can vary based on factors such as location, vehicle make and model, and engine type. It's advisable to check local rates for a more precise estimate. Keep in mind that rates in metropolitan areas or at dealerships may be higher, while independent shops often charge less.

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Code B1B91 Information for Specific Makes

  • B1B91 Chrysler — Driver Seat Track Position Sensor Configuration Mismatch
  • B1B91 Dodge — Driver Seat Track Position Sensor Configuration Mismatch
  • B1B91 Jeep — Driver Seat Track Position Sensor Configuration Mismatch
  • B1B91 Mitsubishi — Driver Seat Track Position Sensor Configuration Mismatch
  • B1B91 RAM — Driver Seat Track Position Sensor Configuration Mismatch

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 B1B91 Code

1. What are the common symptoms of OBDII code B1B91 (Driver Seat Track Position Sensor Configuration Mismatch)?

The common symptoms include the driver's seat being unable to move or adjust properly, erratic movement of the seat, or the seat getting stuck in one position.

2. What causes the OBDII code B1B91 to trigger?

This code is triggered when there is a mismatch detected in the configuration of the driver seat track position sensor, usually due to a fault in the sensor itself or in the seat adjustment system.

3. How can I diagnose the issue related to code B1B91?

Diagnosis involves using a professional OBDII scanner to read the code and identify the specific problem related to the driver seat track position sensor configuration mismatch. A physical inspection of the sensor and its connections may also be necessary.

4. Can I still drive my vehicle with the B1B91 code present?

It is not recommended to drive your vehicle with the B1B91 code present, as it can affect the proper functioning of the driver's seat, potentially leading to safety hazards or discomfort while driving.

5. What are the repair options for OBDII code B1B91?

Repair options may include recalibrating the seat track position sensor, repairing or replacing the sensor, checking and repairing any wiring or connection issues, or seeking professional assistance from a mechanic or dealership.

6. Is it possible to reset the B1B91 code without fixing the underlying issue?

While you can clear the code temporarily with an OBDII scanner, it is not advisable as the problem will persist and may worsen over time. It is important to address the root cause of the code to ensure proper functioning of the driver's seat.

7. How much does it typically cost to repair OBDII code B1B91?

The cost of repair can vary depending on the exact cause of the issue, the extent of the repair needed, and whether you choose to fix it yourself or seek professional help. It is recommended to get a diagnosis and estimate from a mechanic.

8. Can a DIY enthusiast fix the B1B91 code at home?

Depending on your skills and tools available, some DIY enthusiasts may be able to address the B1B91 code by recalibrating or replacing the driver seat track position sensor. However, it is crucial to have a good understanding of automotive systems before attempting any repairs.

9. Are there any preventive measures to avoid OBDII code B1B91 in the future?

Regularly checking and maintaining the driver seat adjustment system, ensuring proper seating position before driving, and addressing any unusual movements or sounds from the seat can help prevent issues leading to the B1B91 code.

10. How urgent is it to address the OBDII code B1B91?

While the severity may vary depending on the symptoms experienced, it is generally recommended to address the B1B91 code promptly to avoid further damage to the seat adjustment system and ensure safe and comfortable driving conditions.

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