AutoCodes – Generic – B191A

B191A Code - Front Heated Seat Module

Quick Answer

The Diagnostic Trouble Code (DTC) will be set when an internal fault is detected inside the Front Heated Seat Module. Common causes include Faulty Front Heated Seat Module, Front Heated Seat Module harness is open or shorted, Front Heated Seat Module 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: B191A indicates Front Heated Seat Module.
Common causes: Common causes include Faulty Front Heated Seat Module, Front Heated Seat Module harness is open or shorted, Front Heated Seat Module 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 435

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 Apr 24, 2023

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B191A Description

The Diagnostic Trouble Code (DTC) will be set when an internal fault is detected inside the Front Heated Seat Module. No external circuits are involved

OBDII Code B191A - Front Heated Seat Module - AutoCodes.com — B191A Code - Front Heated Seat Module

What does this mean?

What are the Possible Causes of the DTC B191A?

Faulty Front Heated Seat Module
Front Heated Seat Module harness is open or shorted
Front Heated Seat Module circuit poor electrical connection

How to Fix the DTC B191A?

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 B191A 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 B191A code?

Need more information on how to fix the B191A code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B191A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B191A Buick — Front Heated Seat Module
B191A Cadillac — Front Heated Seat Module
B191A Chevrolet — Front Heated Seat Module
B191A GMC — Front Heated Seat Module

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 B191A Code

1. What does OBDII code B191A mean?

Code B191A indicates an issue with the Front Heated Seat Module, which is responsible for controlling the heated seat function.

2. What are common symptoms of the B191A code?

Symptoms include the heated seat not functioning, inconsistent heating, or the heated seat indicator light not working.

3. What causes the B191A code to appear?

Common causes include a faulty Front Heated Seat Module, wiring issues, a blown fuse, or a malfunctioning seat heater element.

4. Can I still use my heated seat with a B191A code?

In most cases, the heated seat will not work if this code is active, as it signals a malfunction in the control system.

5. How do I diagnose the B191A code?

Diagnosis typically involves checking the Front Heated Seat Module, inspecting wiring and connectors for damage, and testing the seat heater element for continuity.

6. Is the B191A code a serious issue?

While it doesnâ€™t affect vehicle safety or drivability, it can be inconvenient, especially in cold climates where heated seats are needed.

7. How can I fix the B191A code?

Repairs may include replacing the Front Heated Seat Module, repairing damaged wiring, or replacing the seat heater element.

8. Can a blown fuse trigger the B191A code?

Yes, a blown fuse in the heated seat circuit can cause this code to appear.

9. How much does it cost to repair a B191A code?

Repair costs can vary widely, ranging from $100 to $500 or more, depending on whether the module, wiring, or seat heater element needs replacement.

10. Do I need a professional mechanic to fix the B191A code?

While some issues like replacing a fuse or checking connectors can be done by DIYers, diagnosing and repairing module or wiring problems may require professional expertise.