AutoCodes – GMC – B2172 GMC

B2172 GMC Code - Power Seat Switch Circuit

Quick Answer

The seat adjuster switch signal circuits are supplied 12 volts through resistors within the Memory Seat Module. Common causes include Faulty Power Seat Switch, Power Seat Switch harness is open or shorted, Power Seat 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: B2172 GMC indicates Power Seat Switch Circuit.
Common causes: Common causes include Faulty Power Seat Switch, Power Seat Switch harness is open or shorted, Power Seat 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 607

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 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2172 GMC Description

The seat adjuster switch signal circuits are supplied 12 volts through resistors within the Memory Seat Module. When a seat adjuster switch is pressed the signal circuit is grounded. Closing the signal circuit to ground pulls the signal circuit voltage low indicating to the Memory Seat Module the switch status is active. The OBDII code is set when a seat adjuster switch input to the Memory Seat Module is active for more than 20 seconds.

OBDII Code B2172 GMC - Power Seat Switch Circuit - AutoCodes.com — B2172 GMC Code - Power Seat Switch Circuit

What does this mean?

What are the Possible Causes of the DTC B2172 GMC?

Faulty Power Seat Switch
Power Seat Switch harness is open or shorted
Power Seat Switch circuit poor electrical connection
Faulty Memory Seat Module

How to Fix the DTC B2172 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 B2172 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 B2172 GMC Code

1. What are the common symptoms of OBDII code B2172 GMC related to the Power Seat Switch Circuit?

- Common symptoms may include non-functional power seat adjustments, inability to move the seat forward or backward, or erratic movement of the power seat.

2. What are the possible causes of OBDII code B2172 GMC for the Power Seat Switch Circuit?

- Possible causes can include a faulty power seat switch, damaged wiring or connectors in the seat circuit, or a malfunctioning power seat control module.

3. How can I diagnose the issue causing OBDII code B2172 GMC for the Power Seat Switch Circuit?

- You can start by checking the power seat switch for proper functionality, inspecting the wiring and connectors for any damage or loose connections, and using a diagnostic scanner to identify specific issues with the power seat system.

4. Is it safe to continue driving with OBDII code B2172 GMC triggered for the Power Seat Switch Circuit?

- It is generally safe to drive with this code, but it is recommended to address the issue promptly to avoid potential inconvenience or discomfort due to non-operational power seat adjustments.

5. Can I repair OBDII code B2172 GMC related to the Power Seat Switch Circuit myself?

- If you have experience with automotive electrical systems and the necessary tools, you may be able to repair this issue yourself by replacing a faulty power seat switch, repairing damaged wiring, or addressing other identified issues.

6. Are there any tips for preventing OBDII code B2172 GMC from recurring after repair?

- To prevent this code from recurring, ensure proper installation of any replacement components, perform thorough testing after repair, and regularly inspect the power seat system for any signs of wear or damage.

7. How much does it typically cost to repair OBDII code B2172 GMC for the Power Seat Switch Circuit at a mechanic or dealership?

- The cost of repair can vary depending on the specific cause of the issue, but it may include diagnostic fees, parts replacement costs, and labor charges, which can range from $100 to $500 or more.

8. Can OBDII code B2172 GMC be triggered intermittently for the Power Seat Switch Circuit?

- Yes, this code can be triggered intermittently if the issue is related to a loose connection, intermittent wiring problem, or sporadic malfunction of the power seat switch or control module.

9. Will resetting the OBDII code B2172 GMC clear the issue with the Power Seat Switch Circuit?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code to trigger. It is recommended to diagnose and repair the issue to prevent future occurrences.

10. How long does it typically take to repair OBDII code B2172 GMC for the Power Seat Switch Circuit?

- The repair time can vary depending on the complexity of the issue and the availability of parts, but it may take anywhere from 1 to 4 hours to diagnose and repair the Power Seat Switch Circuit problem.