AutoCodes – Buick – B3397 Buick

B3397 Buick Code - Left Rear Window Up Switch 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: B3397 Buick indicates Left Rear Window Up Switch 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 535

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 B3397 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 B3397 Buick - Left Rear Window Up Switch Circuit Low - AutoCodes.com — B3397 Buick Code - Left Rear Window Up Switch Circuit Low

What does this mean?

What are the Possible Causes of the DTC B3397 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 B3397 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 B3397 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 B3397 Buick Code

1. What are the common symptoms of OBDII code B3397 in a Buick related to the left rear window up switch circuit?

- The common symptoms include the left rear window being stuck in the up position and the switch on the driver's side not functioning properly.

2. What are the possible causes of OBDII code B3397 in a Buick indicating a low left rear window up switch circuit?

- The code B3397 in a Buick may be triggered by a faulty left rear window switch, damaged wiring, or a malfunctioning window control module.

3. How can I diagnose the issue causing OBDII code B3397 in my Buick related to the left rear window switch circuit?

- You can start by checking the left rear window switch for proper functionality, inspecting the wiring for any damage, and testing the window control module for any faults.

4. Can a DIY enthusiast repair OBDII code B3397 Buick issue concerning the left rear window switch circuit?

- Yes, if you have experience working with automotive electrical systems, you may be able to repair the issue by replacing the faulty switch, repairing damaged wiring, or resetting the window control module.

5. Is it safe to continue driving my Buick with OBDII code B3397 indicating a low left rear window up switch circuit?

- While it may be safe to drive, it is recommended to address the issue promptly to avoid any inconvenience or potential safety hazards associated with a malfunctioning window switch.

6. How much does it typically cost to repair OBDII code B3397 in a Buick related to the left rear window switch circuit?

- The cost of repairing OBDII code B3397 can vary depending on the exact cause of the issue, but it may range from $100 to $300 for parts and labor.

7. Can extreme weather conditions affect the left rear window switch circuit in a Buick and trigger OBDII code B3397?

- Yes, extreme weather conditions like heat or moisture can potentially damage the wiring or components in the left rear window switch circuit, leading to the triggering of code B3397.

8. Will disconnecting the car battery reset OBDII code B3397 in a Buick indicating a low left rear window up switch circuit?

- Disconnecting the car battery may reset the code temporarily, but if the underlying issue with the left rear window switch circuit is not addressed, the code is likely to reappear.

9. Can a faulty left rear window motor cause OBDII code B3397 in a Buick associated with the left rear window up switch circuit?

- While a faulty window motor may not directly cause code B3397, it is still recommended to check the motor's functionality as part of diagnosing the issue with the left rear window switch circuit.

10. Are there any recalls or technical service bulletins related to OBDII code B3397 Buick issue concerning the left rear window up switch circuit?

- It is advisable to check with the manufacturer or a certified Buick service center to inquire about any recalls or technical service bulletins related to OBDII code B3397 and the left rear window switch circuit.