AutoCodes – Buick – B1805 Buick

B1805 Buick Code - Driver Seat Motor Side Bolster 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 Side Bolster, Driver Seat Motor Side Bolster harness is open or shorted, Driver Seat Motor Side Bolster 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: B1805 Buick indicates Driver Seat Motor Side Bolster Circuit.
Common causes: Common causes include Faulty Driver Seat Motor Side Bolster, Driver Seat Motor Side Bolster harness is open or shorted, Driver Seat Motor Side Bolster 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 559

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 Jul 31, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1805 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 B1805 Buick - Driver Seat Motor Side Bolster Circuit - AutoCodes.com — B1805 Buick Code - Driver Seat Motor Side Bolster Circuit

What does this mean?

What are the Possible Causes of the DTC B1805 Buick?

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

How to Fix the DTC B1805 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 B1805 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.

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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 B1805 Buick Code

1. What are the common symptoms of OBDII code B1805 in a Buick related to the driver seat motor side bolster circuit?

- Common symptoms include non-responsive or erratic movement of the driver seat side bolster, unexpected adjustments, or issues controlling the side bolster position.

2. What can cause the OBDII code B1805 in a Buick related to the driver seat motor side bolster circuit?

- The code B1805 can be triggered by wiring issues, damaged connectors, a malfunctioning side bolster motor, or a faulty control module.

3. How can I diagnose the OBDII code B1805 for the driver seat motor side bolster circuit in my Buick?

- Diagnosing the issue involves checking the wiring harness for damage, inspecting connectors for corrosion, testing the side bolster motor for functionality, and scanning the control module for fault codes.

4. Is it safe to continue driving my Buick with the OBDII code B1805 for the driver seat motor side bolster circuit?

- It is recommended to address the issue promptly to ensure the proper functioning of the driver seat side bolster and to prevent any further damage to the electrical system.

5. Can I repair the OBDII code B1805 related to the driver seat motor side bolster circuit in my Buick myself?

- Depending on your experience with automotive electrical systems, you may be able to repair the issue yourself by addressing wiring problems, replacing damaged components, or resetting the control module.

6. Are there any quick temporary fixes for the OBDII code B1805 in a Buick related to the driver seat motor side bolster circuit?

- Temporary fixes such as checking and securing the wiring connections or resetting the control module may help in some cases, but a permanent solution should be pursued to resolve the underlying issue.

7. How much does it typically cost to repair the OBDII code B1805 for the driver seat motor side bolster circuit in a Buick?

- Repair costs can vary depending on the extent of the issue, the need for replacement parts, and whether you choose to address the problem yourself or seek professional assistance.

8. Can the OBDII code B1805 in a Buick related to the driver seat motor side bolster circuit be caused by a blown fuse?

- Yes, a blown fuse in the circuit can also trigger the B1805 code, so it's recommended to check the fuse related to the driver seat motor side bolster for any signs of damage.

9. Will resetting the OBDII code B1805 for the driver seat motor side bolster circuit in my Buick make the problem go away permanently?

- Resetting the code may temporarily clear the warning, but if the underlying issue such as a faulty motor or wiring problem is not addressed, the code is likely to reappear.

10. How long does it take to repair the OBDII code B1805 for the driver seat motor side bolster circuit in a Buick?

- The repair time can vary depending on the complexity of the issue and the availability of replacement parts. Simple fixes may take a short amount of time, while more involved repairs could require several hours or more.