AutoCodesCadillac – B2105 Cadillac

B2105 Cadillac 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 Cadillac 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 569
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Sep 17, 2019
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Code B2105 Cadillac 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 Cadillac - Power Seat Switch Shorted - AutoCodes.com
B2105 Cadillac Code - Power Seat Switch Shorted

What are the Possible Causes of the DTC B2105 Cadillac?

  • 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 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 B2105 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.

Need more information about the B2105 Cadillac code?

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Need Help with the Code?

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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 Cadillac Code

1. What does the OBDII code B2105 mean on a Cadillac?

The B2105 code indicates a short circuit in the power seat switch or its wiring, preventing proper operation of the power seat.

2. What are the symptoms of a B2105 code?

Symptoms may include the power seat not moving in one or more directions, intermittent seat adjustments, or no response from the seat controls.

3. What causes the B2105 code to appear?

Common causes include a faulty power seat switch, damaged or exposed wiring, or a malfunction in the seat control module.

4. Can a B2105 code damage other systems in the car?

While it typically only affects the power seat operation, prolonged electrical shorts could potentially lead to issues with the vehicle’s electrical system if left unaddressed.

5. How can I diagnose the B2105 code?

Diagnosis involves checking the power seat switch for continuity, inspecting the wiring for shorts or damage, and testing the seat control module for proper function.

6. Can I still drive my Cadillac with a B2105 code?

Yes, the car is still drivable, but the power seat adjustment may not work, which could affect driver comfort and safety.

7. How do I fix a Cadillac with a B2105 code?

Repairs may include replacing the power seat switch, repairing damaged wiring, or reprogramming or replacing the seat control module.

8. Is the B2105 code a common issue for Cadillacs?

It’s not a widespread issue but can occur in older vehicles or those with frequent power seat adjustments.

9. How much does it cost to repair a B2105 code?

Repair costs vary but typically range from $100 to $500, depending on whether the issue is with the switch, wiring, or seat control module.

10. Can I reset the B2105 code without fixing the problem?

You can clear the code with an OBDII scanner, but it will likely return if the underlying issue isn’t resolved.

Discuss the causes and fixes for B2105 Cadillac OBDII Code

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