AutoCodes – Lincoln – B0091 Lincoln

B0091 Lincoln Code - Left Side Restraints Sensor 1

Quick Answer

The Restraints Control Module (RCM) monitors all of Supplemental Restraint System (SRS) device connections. Common causes include Faulty Left Side Restraints Sensor 1, Left Side Restraints Sensor 1 harness is open or shorted, Left Side Restraints Sensor 1 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: B0091 Lincoln indicates Left Side Restraints Sensor 1.
Common causes: Common causes include Faulty Left Side Restraints Sensor 1, Left Side Restraints Sensor 1 harness is open or shorted, Left Side Restraints Sensor 1 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 3,459

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 Jun 14, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B0091 Lincoln Description

The Restraints Control Module (RCM) monitors all of Supplemental Restraint System (SRS) device connections. If the RCM detects a connection or device connected that is not stored in memory or is not configured for the component, the RCM will set a Diagnostic Trouble Code (DTC) and send a message to the Instrument Panel Cluster (IPC) to illuminate air bag warning indicator.

OBDII Code B0091 Lincoln - Left Side Restraints Sensor 1 - AutoCodes.com — B0091 Lincoln Code - Left Side Restraints Sensor 1

What does this mean?

What are the Possible Causes of the DTC B0091 Lincoln?

Faulty Left Side Restraints Sensor 1
Left Side Restraints Sensor 1 harness is open or shorted
Left Side Restraints Sensor 1 circuit poor electrical connection

How to Fix the DTC B0091 Lincoln?

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 B0091 Lincoln 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 B0091 Lincoln code?

Need more information on how to fix the B0091 Lincoln code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B0091 Lincoln 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 B0091 Lincoln Code

1. What are common symptoms of OBDII code B0091 in a Lincoln related to the Left Side Restraints Sensor 1?

The common symptoms may include the airbag warning light illuminating on the dashboard and potential issues with the deployment of the airbags in case of an accident.

2. What could cause OBDII code B0091 in a Lincoln indicating an issue with the Left Side Restraints Sensor 1?

Possible causes of this code could be a faulty left side impact sensor, wiring issues, or a problem with the airbag control module.

3. How can I diagnose the OBDII code B0091 in a Lincoln associated with the Left Side Restraints Sensor 1?

Diagnosis typically involves using a scan tool to retrieve the specific fault code, inspecting the left side impact sensor and its wiring, and checking the airbag system for any other related issues.

4. Is it safe to drive a Lincoln with OBDII code B0091 indicating a problem with the Left Side Restraints Sensor 1?

It is not recommended to drive the vehicle with this code present, as it can affect the proper functioning of the airbag system, potentially compromising safety in the event of a collision.

5. Can I reset the OBDII code B0091 related to the Left Side Restraints Sensor 1 in my Lincoln?

While you can clear the code with a scan tool, it is important to address the underlying issue causing the code to prevent it from reoccurring and ensure the airbag system is functioning correctly.

6. Are there any DIY repair tips for fixing OBDII code B0091 in a Lincoln due to the Left Side Restraints Sensor 1?

DIY repair may involve checking and securing the wiring connections to the left side impact sensor, inspecting for any visible damage, and ensuring the sensor is properly mounted and functioning.

7. How much does it typically cost to repair OBDII code B0091 in a Lincoln related to the Left Side Restraints Sensor 1?

The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the left side impact sensor, addressing wiring problems, or reprogramming the airbag control module.

8. Can a mechanic easily fix OBDII code B0091 in a Lincoln caused by the Left Side Restraints Sensor 1?

A qualified mechanic with experience in diagnosing and repairing airbag systems should be able to effectively address the issue, ensuring the proper functioning of the Left Side Restraints Sensor 1.

9. What are the risks of ignoring OBDII code B0091 associated with the Left Side Restraints Sensor 1 in a Lincoln?

Ignoring this code can lead to potential airbag system malfunctions, which may result in the airbags not deploying correctly during an accident, jeopardizing the safety of the vehicle occupants.

10. How can I prevent OBDII code B0091 from occurring again in my Lincoln due to issues with the Left Side Restraints Sensor 1?

Regularly inspecting and maintaining the airbag system, addressing any wiring issues promptly, and ensuring proper installation of components can help prevent the recurrence of this code.