AutoCodes – Cadillac – B1805 Cadillac

B1805 Cadillac 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 Cadillac 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 808

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 Cadillac 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 Cadillac - Driver Seat Motor Side Bolster Circuit - AutoCodes.com — B1805 Cadillac Code - Driver Seat Motor Side Bolster Circuit

What does this mean?

What are the Possible Causes of the DTC B1805 Cadillac?

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 Cadillac?

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 Cadillac 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 Cadillac Code

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

The common symptoms include malfunctioning power seat adjustments, inability to adjust the side bolster support, and illuminated warning lights on the dashboard.

2. What are the possible causes of OBDII code B1805 in a Cadillac?

Potential causes of this code include damaged wiring or connectors in the driver seat motor side bolster circuit, a faulty side bolster motor, or a malfunctioning control module.

3. How can I diagnose the issue related to OBDII code B1805 in my Cadillac?

You can diagnose the problem by conducting a visual inspection of the wiring and connectors, using a multimeter to test for continuity, and scanning the vehicle's computer system for specific error codes.

4. Can I repair OBDII code B1805 in my Cadillac on my own?

Depending on your level of automotive expertise, you may be able to repair this issue yourself by replacing damaged wiring or connectors, testing and replacing the side bolster motor, or reprogramming the control module if necessary.

5. Is it safe to drive my Cadillac with OBDII code B1805 present?

If the driver seat functions are still working properly and there are no other noticeable issues, it may be safe to drive the vehicle. However, it is recommended to address the problem promptly to avoid potential safety risks.

6. How much does it typically cost to repair OBDII code B1805 in a Cadillac?

The cost of repairing this code can vary depending on the specific cause of the issue, the parts required for the repair, and whether you choose to do the repairs yourself or take your vehicle to a professional mechanic.

7. Can resetting the OBDII system clear the B1805 code in my Cadillac?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue causing the B1805 code is not addressed, the code is likely to reappear after driving the vehicle for a certain distance or time.

8. Are there any preventative measures I can take to avoid OBDII code B1805 in my Cadillac?

To prevent OBDII code B1805, you can regularly inspect the wiring and connectors in the driver seat motor side bolster circuit, avoid putting excessive pressure on the side bolster, and follow proper maintenance guidelines for your vehicle.

9. Can extreme temperatures or environmental conditions trigger OBDII code B1805 in a Cadillac?

Yes, extreme temperatures or environmental conditions can potentially lead to wiring degradation or electrical component malfunctions, which may trigger OBDII code B1805 in your Cadillac.

10. How long does it typically take to repair OBDII code B1805 in a Cadillac?

The repair time for OBDII code B1805 can vary depending on the complexity of the issue and the availability of parts. In some cases, it may take a few hours to a full day to diagnose and repair the problem effectively.