AutoCodes – Buick – B1785 Buick

B1785 Buick Code - Driver Seat Motor Recline Circuit

Quick Answer

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. Common causes include Faulty Driver Seat Motor Recline, Driver Seat Motor Recline harness is open or shorted, Driver Seat Motor Recline 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: B1785 Buick indicates Driver Seat Motor Recline Circuit.
Common causes: Common causes include Faulty Driver Seat Motor Recline, Driver Seat Motor Recline harness is open or shorted, Driver Seat Motor Recline 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.

Save to My Repairs My Repairs

AI answers can be wrong. Verify repairs with testing. Open full chat

Code Popularity 635

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 Oct 16, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
Add Comment

💬 Need more help? Ask Coddy for instant answers — it's free!

Code B1785 Buick Description

The seat adjuster motors are controlled by the Driver Seat Module (DSM) through the adjuster motor control circuits. In an inactive state both of the motor control circuits are grounded within the DSM. In an active state the DSM switches the appropriate motor control circuit to battery positive voltage. The direction of the adjuster motor rotation is determined by which of the motor control circuits is switched to battery positive voltage while the other remains grounded. During adjuster motor operation the DSM also monitors the current flow through the motor control circuits.

OBDII Code B1785 Buick - Driver Seat Motor Recline Circuit - AutoCodes.com — B1785 Buick Code - Driver Seat Motor Recline Circuit

What does this mean?

What are the Possible Causes of the DTC B1785 Buick?

Faulty Driver Seat Motor Recline
Driver Seat Motor Recline harness is open or shorted
Driver Seat Motor Recline circuit poor electrical connection
Faulty Driver Seat Module (DSM)

How to Fix the DTC B1785 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 B1785 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 B1785 Buick code?

Need more information on how to fix the B1785 Buick code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1785 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 B1785 Buick Code

1. What are common symptoms of OBDII code B1785 in a Buick related to the driver seat motor recline circuit?

- Common symptoms include the inability to adjust the driver seat recline position or experiencing erratic movement of the seat.

2. What are possible causes of OBDII code B1785 in a Buick associated with the driver seat motor recline circuit?

- Possible causes include a faulty driver seat motor, damaged wiring or connectors in the seat recline circuit, or a malfunctioning seat control module.

3. How can I diagnose the issue related to OBDII code B1785 in my Buick's driver seat motor recline circuit?

- To diagnose the issue, you can use a diagnostic scanner to read the fault code, visually inspect the wiring and connectors for any damage, and test the driver seat motor for proper operation.

4. Is it safe to continue driving my Buick with OBDII code B1785 related to the driver seat motor recline circuit?

- It is not recommended to continue driving the vehicle with this issue, as it may lead to discomfort while driving and potentially compromise the safety and function of the driver seat.

5. How can I reset OBDII code B1785 in my Buick after repairing the driver seat motor recline circuit issue?

- After repairing the driver seat motor recline circuit problem, you can reset the OBDII code by using a diagnostic scanner to clear the fault code from the vehicle's system.

6. Can I repair the driver seat motor recline circuit issue related to OBDII code B1785 in my Buick myself?

- Depending on your level of expertise, you may be able to repair the issue yourself by following a repair manual specific to your vehicle model and using the necessary tools and equipment.

7. What are some tips for preventing issues with the driver seat motor recline circuit in a Buick that may trigger OBDII code B1785?

- Regularly inspect and maintain the driver seat components, avoid putting excessive pressure on the seat during adjustments, and address any unusual noises or movements promptly.

8. Are there any recalls or technical service bulletins related to OBDII code B1785 in Buick vehicles concerning the driver seat motor recline circuit?

- It is recommended to check with your local Buick dealership or visit the manufacturer's website to inquire about any recalls or technical service bulletins related to this specific issue.

9. How much does it typically cost to repair the driver seat motor recline circuit problem triggering OBDII code B1785 in a Buick?

- The cost of repair can vary depending on the root cause of the issue, the extent of the damage, and whether you choose to repair it yourself or seek professional assistance from a mechanic or dealership.

10. Can OBDII code B1785 related to the driver seat motor recline circuit in a Buick impact other vehicle functions or systems?

- While the code is specific to the driver seat motor recline circuit, electrical issues in one part of the vehicle can sometimes affect other systems, so it's essential to address the problem promptly.