AutoCodes – Chevrolet – B3397 Chevrolet

B3397 Chevrolet 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 Chevrolet 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 520

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

What does this mean?

What are the Possible Causes of the DTC B3397 Chevrolet?

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 Chevrolet?

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 Chevrolet 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 Chevrolet Code

1. What are the common symptoms of OBDII code B3397 Chevrolet (Left Rear Window Up Switch Circuit Low)?

The common symptoms include the left rear window being stuck in the up position, the window not responding to the switch, and possible issues with other windows in the vehicle.

2. What can cause the OBDII code B3397 Chevrolet to trigger?

This code is typically triggered by a fault in the left rear window up switch circuit, such as a short circuit, wiring issue, or a problem with the switch itself.

3. How can I diagnose the cause of OBDII code B3397 Chevrolet?

Diagnosing this code involves checking the wiring and connections related to the left rear window up switch, testing the switch for proper functionality, and inspecting for any visible damage or issues.

4. Is it safe to continue driving with OBDII code B3397 Chevrolet active?

While the vehicle may still be drivable with this code, it is recommended to address the issue promptly to avoid potential inconvenience and safety concerns, especially if the window is stuck in the up position.

5. Can I repair OBDII code B3397 Chevrolet on my own?

Repairing this code may require basic electrical knowledge and tools. Depending on the exact cause, you may need to replace the left rear window up switch, repair wiring issues, or seek professional assistance for a more complex repair.

6. How much does it typically cost to fix OBDII code B3397 Chevrolet?

The cost of fixing this code can vary depending on the root cause of the issue, labor rates in your area, and whether you choose to repair it yourself or take it to a mechanic. It's best to get a diagnosis and estimate from a trusted repair shop.

7. Are there any temporary solutions for OBDII code B3397 Chevrolet?

If the left rear window is stuck in the up position, you may try gently tapping the window motor or switch to see if it responds. However, this should only be a temporary measure, and the underlying issue should still be addressed.

8. Can weather conditions affect OBDII code B3397 Chevrolet?

Extreme weather conditions, such as heavy rain or extreme temperatures, can potentially exacerbate electrical issues related to the window switch circuit. It's important to keep the vehicle protected and address any existing problems promptly.

9. Will resetting the OBDII code B3397 Chevrolet make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to return. It's crucial to diagnose and fix the root cause to prevent ongoing problems.

10. How long does it typically take to repair OBDII code B3397 Chevrolet?

The repair time for this code can vary based on the complexity of the issue and the availability of parts. Simple fixes may take a couple of hours, while more involved repairs could require leaving the vehicle at a repair shop for a day or more.