AutoCodes – Buick – B242D Buick

B242D Buick Code - Passenger Seat Temperature Request Circuit

Quick Answer

When a heated or cooled seat switch is pressed, a LIN Bus message is sent to the Body Control Module (BCM) indicating the heated or cooled seat request. Common causes include Faulty Seat Blower Assembly, Seat Blower Assembly harness is open or shorted, Seat Blower Assembly 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: B242D Buick indicates Passenger Seat Temperature Request Circuit.
Common causes: Common causes include Faulty Seat Blower Assembly, Seat Blower Assembly harness is open or shorted, Seat Blower Assembly 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 630

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 Dec 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B242D Buick Description

When a heated or cooled seat switch is pressed, a LIN Bus message is sent to the Body Control Module (BCM) indicating the heated or cooled seat request. The BCM then sends a low side Pulse Width Modulation (PWM) signal through the heated/cooled seat mode signal circuit to the seat back and seat cushion blower assemblies for the appropriate seat.

OBDII Code B242D Buick - Passenger Seat Temperature Request Circuit - AutoCodes.com — B242D Buick Code - Passenger Seat Temperature Request Circuit

What does this mean?

What are the Possible Causes of the DTC B242D Buick?

Faulty Seat Blower Assembly
Seat Blower Assembly harness is open or shorted
Seat Blower Assembly circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B242D Buick?

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 B242D Buick 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 B242D Buick code?

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Need Help with the Code?

Get the B242D Buick code diagnosed by a professional: Find a repair shop in your area

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 B242D Buick Code

1. What does the OBDII code B242D mean on a Buick?

The B242D code indicates an issue with the passenger seat temperature request circuit, typically related to the seat heating or cooling system.

2. What are common symptoms of the B242D code in a Buick?

Symptoms include the passenger seat heater or cooler not functioning, inconsistent temperature control, or no response from the seat temperature adjustment.

3. What causes the B242D code to trigger in a Buick?

Common causes include a faulty seat temperature control module, damaged wiring or connectors, or a malfunctioning seat temperature sensor.

4. Can the B242D code affect other vehicle systems?

No, this code typically only impacts the seat temperature control system and does not affect other vehicle systems.

5. How do I diagnose the B242D code in my Buick?

Start by checking the wiring and connectors for damage, inspect the seat temperature sensor, and test the seat temperature control module for proper operation.

6. Can I still drive my Buick with the B242D code active?

Yes, your vehicle is safe to drive, but the passenger seat heating or cooling functionality may not work properly.

7. How do I fix the B242D code on a Buick?

Repairs may involve replacing the seat temperature control module, repairing or replacing damaged wiring, or replacing the seat temperature sensor.

8. How much does it cost to repair the B242D code in a Buick?

Repair costs vary but may range from $100 to $500 depending on whether the issue is with the wiring, sensor, or control module.

9. Can a faulty passenger seat temperature sensor cause the B242D code?

Yes, a malfunctioning temperature sensor is a common cause of this code being triggered.

10. Do I need a professional to fix the B242D code on my Buick?

While some issues like inspecting wiring can be done at home, diagnosing and replacing components like the control module may require professional assistance.