AutoCodes – Generic – B1750

B1750 Code - Driver Seat Rear Down Switch Circuit

Quick Answer

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch 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: B1750 indicates Driver Seat Rear Down Switch Circuit.
Common causes: Common causes include Faulty Driver Seat Adjuster Switch, Driver Seat Adjuster Switch harness is open or shorted, Driver Seat Adjuster Switch 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 5,348

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 Apr 24, 2023

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code B1750 Description

The Seat Memory Control Module supplies a reference voltage to each signal circuit of the Driver Seat Adjuster Switch. When the power seat or lumbar switches are pressed, the appropriate signal circuit from the Seat Memory Control Module is pulled low through the switch contacts indicating the power seat command. The Seat Memory Control Module then commands the driver seat or lumbar to move in response to the switch signals. The Diagnostic Trouble Code (DTC) will be set when there is a short to ground on a switch signal circuit.

OBDII Code B1750 - Driver Seat Rear Down Switch Circuit - AutoCodes.com — B1750 Code - Driver Seat Rear Down Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B1750?

Faulty Driver Seat Adjuster Switch
Driver Seat Adjuster Switch harness is open or shorted
Driver Seat Adjuster Switch circuit poor electrical connection
Faulty Seat Memory Control Module

How to Fix the DTC B1750?

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 does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1750 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 B1750 code?

Need more information on how to fix the B1750 code? Get Access to Factory Service Manuals

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Get the B1750 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1750 Acura — Communication Bus Line Error
B1750 Buick — Driver Seat Rear Down Switch Circuit
B1750 Cadillac — Driver Seat Rear Down Switch Circuit
B1750 Chevrolet — Driver Seat Rear Down Switch Circuit
B1750 GMC — Driver Seat Rear Down Switch Circuit
B1750 Honda — Communication Bus Line Error

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 B1750 Code

What does OBDII code B1750 indicate?

OBDII code B1750 indicates a malfunction in the driver seat rear down switch circuit, which affects the operation of the seat adjustment system.

What symptoms might I experience with a B1750 code?

Symptoms may include the driver seat not moving down, malfunction of other seat adjustments, or a warning light on the dashboard.

What could cause the B1750 code to trigger?

Common causes include a faulty rear down switch, wiring issues, or a problem with the seat control module.

How can I troubleshoot a B1750 code?

Start by inspecting the wiring and connectors for damage, test the rear down switch for continuity, and check the seat control module for faults.

Is it safe to drive with a B1750 code?

While it may not pose an immediate safety risk, the inability to adjust the seat properly can lead to discomfort and poor visibility, making it advisable to address the issue.

What tools do I need to fix the B1750 code?

You will typically need a multimeter for testing electrical components, basic hand tools for accessing the seat, and possibly a diagnostic scanner to clear the code after repairs.

Can I reset the B1750 code myself?

Yes, you can reset the code using an OBDII scanner after addressing the underlying issue, but the code may reappear if the problem is not resolved.

Should I replace the seat control module if I have a B1750 code?

Not necessarily; itâ€™s important to diagnose the issue thoroughly first, as the problem may lie with the switch or wiring rather than the module itself.

What is the average cost to repair a B1750 code issue?

Repair costs can vary widely but may range from $50 to $300, depending on whether you need to replace a switch, repair wiring, or replace the seat control module.