AutoCodes – Buick – B3517 Buick

B3517 Buick Code - Left Rear Window Express Down Circuit Low

Quick Answer

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) 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: B3517 Buick indicates Left Rear Window Express Down Circuit Low.
Common causes: Common causes include Faulty Driver Door Switch Assembly (DDSA), Driver Door Switch Assembly (DDSA) harness is open or shorted, Driver Door Switch Assembly (DDSA) 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 415

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

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Table of contents Created and updated by William Orellana on Mar 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B3517 Buick Description

The window switch or window switch circuits that generate this Diagnostic Trouble Code (DTC) are built-in parts of the Driver Door Switch Assembly (DDSA). There are no external circuits. The DDSA internally supplies power and ground to the contacts of each of the integral window switches. When one of the switches is operated, the switch contacts close, providing the DDSA with a specific window switch signal. The DDSA processes this signal, assigns a digital message to it, and sends the message to the appropriate Driver Door Module (DDM), Passenger Front Door Module (PDM), Left Rear Door Module (LRDM), or Right Rear Door Module (RRDM), via the class 2 serial data circuit. The door module, upon receiving the message, examines other relevant information available on the class 2 serial data line in order to determine if conditions are correct for window operation to occur. If conditions are correct, the door module applies power and ground to the associated window motor and circuits in order to move the window. If the DDSA determines that one of its built in window switches is closed for more than 15 continuous seconds, it sets the DTC.

OBDII Code B3517 Buick - Left Rear Window Express Down Circuit Low - AutoCodes.com — B3517 Buick Code - Left Rear Window Express Down Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3517 Buick?

Faulty Driver Door Switch Assembly (DDSA)
Driver Door Switch Assembly (DDSA) harness is open or shorted
Driver Door Switch Assembly (DDSA) circuit poor electrical connection
Faulty Left Rear Door Module (LRDM)
Faulty Driver Door Module (DDM)

How to Fix the DTC B3517 Buick?

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 B3517 Buick 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 B3517 Buick Code

1. What does the OBDII code B3517 mean on a Buick?

The code B3517 indicates a problem with the Left Rear Window Express Down Circuit, where the voltage is lower than expected.

2. What are the symptoms of the B3517 code in a Buick?

Common symptoms include the left rear window not moving or operating erratically, especially when attempting to use the express-down feature.

3. What causes the B3517 code to appear in a Buick?

This code is typically caused by a faulty window switch, damaged wiring, a malfunctioning motor, or a poor ground connection in the left rear window circuit.

4. Can I still drive my Buick with a B3517 code?

Yes, you can still drive the vehicle, but the left rear window may not function properly until the issue is resolved.

5. How do I diagnose a B3517 code in my Buick?

Start by inspecting the wiring and connections for damage or corrosion, then test the window switch and motor for proper operation using a multimeter.

6. How do I fix the B3517 code on my Buick?

Repairs may include replacing the window switch, repairing damaged wiring, or replacing the window motor if it is faulty.

7. Can a blown fuse cause the B3517 code?

A blown fuse is unlikely to cause this specific code, but itâ€™s worth checking the fuses related to the power windows as part of the diagnostic process.

8. How much does it cost to repair the B3517 code on a Buick?

The cost depends on the specific issue, with window switch replacements costing $50â€“$150 and motor repairs or replacements ranging from $200â€“$400.

9. Will resetting the code fix the B3517 issue?

Simply clearing the code will not fix the underlying problem; the circuit issue must be repaired to prevent the code from returning.

10. Can a bad battery cause the B3517 code on a Buick?

A weak or failing battery can sometimes cause electrical issues, but itâ€™s not a common cause for this specific code. Always ensure the battery is in good condition.