AutoCodes – GMC – B3172 GMC

B3172 GMC 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 GMC 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 454

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

What does this mean?

What are the Possible Causes of the DTC B3172 GMC?

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 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 B3172 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 B3172 GMC Code

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

Symptoms may include the right front window being inoperative or not responding to the up switch command.

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

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

3. How can I diagnose the issue related to OBDII code B3172 GMC?

You can use a multimeter to test the continuity of the wiring, inspect the window switch for any visible damage, and perform a scan tool test to check the window control module.

4. Can a DIY enthusiast repair OBDII code B3172 GMC?

Depending on your skill level, you may be able to repair this issue by replacing the faulty window switch, repairing damaged wiring, or replacing the window control module.

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

While the vehicle may still be operable, it is recommended to address the issue promptly to avoid potential safety concerns and further damage to the electrical system.

6. Are there any common mistakes to avoid when dealing with OBDII code B3172 GMC?

Avoid overlooking loose connections, assuming the issue is always with the switch, and neglecting to inspect the entire circuit for potential faults.

7. How much does it typically cost to repair OBDII code B3172 GMC at a repair shop?

The cost can vary depending on the specific cause of the issue, but replacing a faulty switch or repairing wiring may range from $100 to $300, while replacing a control module can cost more.

8. Can extreme weather conditions affect the occurrence of OBDII code B3172 GMC?

Yes, extreme temperatures or moisture can potentially worsen electrical issues leading to this OBDII code, so it's essential to keep the vehicle protected and maintained properly.

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

Resetting the system may temporarily clear the code, but if the underlying issue is not addressed, the code is likely to return after driving or using the affected window switch.

10. Is professional help necessary to repair OBDII code B3172 GMC?

While DIY repairs are possible for some individuals, seeking professional help from a certified mechanic or auto electrician is recommended for accurate diagnosis and proper repair of this OBDII code.