AutoCodes – GMC – B2105 GMC

B2105 GMC Code - Power Seat Switch Shorted

Quick Answer

When the Power Seat Switches are pressed, the Memory Seat Module (MSM) receives an input from the switch. Common causes include Faulty Power Seat Adjuster Switch, Power Seat Adjuster Switch harness is open or shorted, Power 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: B2105 GMC indicates Power Seat Switch Shorted.
Common causes: Common causes include Faulty Power Seat Adjuster Switch, Power Seat Adjuster Switch harness is open or shorted, Power 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 638

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 Sep 17, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2105 GMC Description

When the Power Seat Switches are pressed, the Memory Seat Module (MSM) receives an input from the switch. The MSM commands the driver seat to move in response to the switch input. If a seat switch continues to be active for 30 seconds after the motor controlled by that switch reaches the end of its travel, the switch will be considered shorted and the MSM will set the Diagnostic Trouble Code (DTC) or if a position sensor DTC is current and the associated switch is active for 30 continuous seconds, the switch will be considered shorted and the MSM will set the DTC.

OBDII Code B2105 GMC - Power Seat Switch Shorted - AutoCodes.com — B2105 GMC Code - Power Seat Switch Shorted

What does this mean?

What are the Possible Causes of the DTC B2105 GMC?

Faulty Power Seat Adjuster Switch
Power Seat Adjuster Switch harness is open or shorted
Power Seat Adjuster Switch circuit poor electrical connection
Faulty Memory Seat Module (MSM)

How to Fix the DTC B2105 GMC?

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 B2105 GMC 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 B2105 GMC Code

1. What are the common symptoms of OBDII code B2105 GMC (Power Seat Switch Shorted)?

The common symptoms include loss of power seat functionality, such as the inability to adjust the seat position or operate the seat controls.

2. What are the possible causes of OBDII code B2105 GMC (Power Seat Switch Shorted)?

The code B2105 typically indicates a short circuit in the power seat switch wiring, a faulty power seat switch, or damaged wiring harness.

3. How can I diagnose the issue related to OBDII code B2105 GMC (Power Seat Switch Shorted)?

You can start by visually inspecting the power seat switch and its wiring for any visible damage. Using a multimeter to test the continuity of the switch and wiring can help pinpoint the source of the short.

4. Can I still drive my vehicle with OBDII code B2105 GMC (Power Seat Switch Shorted)?

While the code itself does not affect the drivability of the vehicle, it is recommended to address the issue promptly to ensure the power seat functions properly and avoid any potential safety hazards.

5. How can I repair OBDII code B2105 GMC (Power Seat Switch Shorted)?

Repairing the issue may involve replacing the faulty power seat switch, repairing damaged wiring, or addressing any short circuits. Consult a professional mechanic for a thorough diagnosis and repair.

6. Is it safe to attempt DIY repairs for OBDII code B2105 GMC (Power Seat Switch Shorted)?

If you have experience with automotive electrical systems and the necessary tools, you can attempt simple repairs like checking for loose connections or replacing the power seat switch. For complex issues, it's best to seek professional help.

7. Can weather or water damage cause OBDII code B2105 GMC (Power Seat Switch Shorted)?

Yes, exposure to moisture or water leaks can potentially damage the power seat switch or its wiring, leading to a short circuit and triggering the B2105 trouble code.

8. Will resetting the OBDII code B2105 GMC (Power Seat Switch Shorted) make it go away permanently?

Resetting the code may temporarily clear the error, but if the underlying issue causing the short circuit is not addressed, the code is likely to reappear once the system detects the problem again.

9. How can I prevent OBDII code B2105 GMC (Power Seat Switch Shorted) from recurring?

Regularly inspecting and maintaining the power seat switch and its wiring can help prevent issues like short circuits. Avoid spilling liquids on the switch and promptly address any signs of damage.

10. Are there any recalls or technical service bulletins related to OBDII code B2105 GMC (Power Seat Switch Shorted)?

It's advisable to check with a GMC dealership or visit the manufacturer's website to see if there are any recalls or technical service bulletins addressing the B2105 trouble code specifically related to power seat switch issues.