AutoCodes – Generic – B3172

B3172 Code - Right Front Window Up Switch Circuit Low

Quick Answer

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Common causes include Faulty Right Front Window Switch, Right Front Window Switch harness is open or shorted, Right Front Window 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: B3172 indicates Right Front Window Up Switch Circuit Low.
Common causes: Common causes include Faulty Right Front Window Switch, Right Front Window Switch harness is open or shorted, Right Front Window 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 528

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 Mar 04, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3172 Description

This Diagnostic Trouble Code (DTC) is generated by a passenger door window switch or a passenger door window switch circuit. Each passenger door window switch is mounted to the trim panel of the appropriate passenger door. The circuits and contacts of each passenger door window switch receive battery voltage and ground from the corresponding door module, i.e. Front Passenger Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM). When a passenger door window switch is operated, the switch contacts close and the associated door module interprets the flow of voltage as a specific request to move the window up or down. If conditions are correct for window operation to occur, the door module then powers the associated window motor and circuits to move the window.

OBDII Code B3172 - Right Front Window Up Switch Circuit Low - AutoCodes.com — B3172 Code - Right Front Window Up Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3172?

Faulty Right Front Window Switch
Right Front Window Switch harness is open or shorted
Right Front Window Switch circuit poor electrical connection
Faulty Front Passenger Door Module (PDM)

How to Fix the DTC B3172?

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 B3172 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 B3172 code?

Need more information on how to fix the B3172 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B3172 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B3172 Buick — Right Front Window Up Switch Circuit Low
B3172 Cadillac — Right Front Window Up Switch Circuit Low
B3172 Chevrolet — Right Front Window Up Switch Circuit Low
B3172 GMC — Right Front Window Up Switch Circuit Low

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 B3172 Code

1. What are the common symptoms of OBDII code B3172 (Right Front Window Up Switch Circuit Low)?

- Common symptoms include the right front window being unable to be raised using the switch, or the window moving slowly or intermittently.

2. What are the possible causes of OBDII code B3172?

- Possible causes include a faulty right front window switch, damaged wiring in the circuit, or a malfunctioning window control module.

3. How can I diagnose the cause of OBDII code B3172?

- You can diagnose the issue by checking the wiring and connections related to the right front window switch, testing the switch itself for proper function, and using a scan tool to retrieve further diagnostic information.

4. Can a DIY enthusiast repair OBDII code B3172 at home?

- Yes, some repairs related to this code, such as replacing a faulty switch or repairing damaged wiring, can be done at home with the right tools and knowledge.

5. Is it safe to continue driving with OBDII code B3172 present?

- It is generally safe to continue driving with this code, but you may experience inconvenience due to the malfunctioning window switch.

6. How much does it typically cost to repair OBDII code B3172 at a mechanic or dealership?

- The cost of repairs for this code can vary depending on the exact cause, but it may range from $100 to $300 for parts and labor.

7. Are there any preventive measures to avoid OBDII code B3172 in the future?

- Ensuring regular maintenance checks on your vehicle's electrical components and addressing any issues promptly can help prevent the occurrence of this code.

8. Can OBDII code B3172 affect other electrical systems in the vehicle?

- While the code specifically relates to the right front window switch circuit, it may indicate underlying issues that could potentially affect other electrical systems in the vehicle.

9. Will resetting the OBDII system clear the B3172 code?

- Resetting the OBDII system may temporarily clear the code, but it is important to diagnose and address the root cause of the issue to prevent the code from reoccurring.

10. How urgent is it to address OBDII code B3172?

- Addressing this code in a timely manner is recommended to ensure the proper functioning of the right front window switch and to avoid potential safety hazards or further electrical issues.