AutoCodes – Generic – B1758

B1758 Code - Seat Driver Rear Down Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Seat Driver Rear Down Motor. Common causes include Faulty Seat Driver Rear Down Motor, Seat Driver Rear Down Motor harness is open or shorted, Seat Driver Rear Down Motor 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: B1758 indicates Seat Driver Rear Down Circuit Open.
Common causes: Common causes include Faulty Seat Driver Rear Down Motor, Seat Driver Rear Down Motor harness is open or shorted, Seat Driver Rear Down Motor 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 3,671

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 Jun 26, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
Comments
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Code B1758 Description

The Body Control Module (BCM) monitors the Seat Driver Rear Down Motor. The BCM sets the OBDII code when the Seat Driver Rear Down Motor is not to factory specifications.

OBDII Code B1758 - Seat Driver Rear Down Circuit Open - AutoCodes.com — B1758 Code - Seat Driver Rear Down Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1758?

Faulty Seat Driver Rear Down Motor
Seat Driver Rear Down Motor harness is open or shorted
Seat Driver Rear Down Motor circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1758?

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 B1758 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 B1758 code?

Need more information on how to fix the B1758 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1758 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1758 Nissan — Soft Top Thermo Protection

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.