AutoCodes – Generic – B396A

B396A Code - Liftgate Motor Power Open/Close Malfunction

Quick Answer

The liftgate motor is a bi-directional motor and open or close operation is the result of the direction of the motor rotation. Common causes include Faulty Liftgate Motor, Liftgate Motor harness is open or shorted, Liftgate Motor 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: B396A indicates Liftgate Motor Power Open/Close Malfunction.
Common causes: Common causes include Faulty Liftgate Motor, Liftgate Motor harness is open or shorted, Liftgate Motor 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 6,397

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 25, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B396A Description

The liftgate motor is a bi-directional motor and open or close operation is the result of the direction of the motor rotation. The Liftgate Control Module controls the liftgate motor through the control circuits by supplying power and ground in the appropriate polarity. The motor control circuits are monitored by the liftgate control module prior to activation for a high or low condition and during motor operation for any irregular current flow conditions. The Diagnostic Trouble Code (DTC) sets when the Liftgate Control Module detects a short to battery in the Liftgate Motor control circuits.

OBDII Code B396A - Liftgate Motor Power Open/Close Malfunction - AutoCodes.com — B396A Code - Liftgate Motor Power Open/Close Malfunction

What does this mean?

What are the Possible Causes of the DTC B396A?

Faulty Liftgate Motor
Liftgate Motor harness is open or shorted
Liftgate Motor circuit poor electrical connection
Faulty Liftgate Control Module

How to Fix the DTC B396A?

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 B396A 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 B396A code?

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Need Help with the Code?

Get the B396A code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B396A Buick — Liftgate Motor Power Open/Close Malfunction
B396A Cadillac — Liftgate Motor Power Open/Close Malfunction
B396A Chevrolet — Liftgate Motor Power Open/Close Malfunction
B396A GMC — Liftgate Motor Power Open/Close Malfunction

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 B396A Code

1. What are the common symptoms of OBDII code B396A (Liftgate Motor Power Open/Close Malfunction)?

- Common symptoms include the liftgate not opening or closing properly, unusual noises coming from the liftgate motor, and an illuminated warning light on the dashboard.

2. What are the possible causes of OBDII code B396A?

- Possible causes of this code may include a faulty liftgate motor, damaged wiring or connectors, a malfunctioning liftgate control module, or issues with the liftgate motor power supply.

3. How can I diagnose the source of OBDII code B396A?

- To diagnose this code, you can use an OBDII scanner to retrieve the specific fault codes. Additionally, visually inspect the liftgate motor, wiring, and connectors for any visible damage or loose connections.

4. What are some repair tips for resolving OBDII code B396A?

- Repair tips may involve checking and repairing any damaged wiring or connectors, replacing the liftgate motor if necessary, resetting the liftgate control module, and ensuring proper power supply to the motor.

5. Can I drive my vehicle with OBDII code B396A?

- It is not recommended to drive your vehicle with this code as it may lead to further damage or safety hazards. It is important to address the issue promptly to ensure the liftgate functions properly.

6. Is it possible to reset OBDII code B396A without repairs?

- While clearing the fault code temporarily may be possible, it is crucial to address the underlying issue causing the malfunction to prevent the code from reoccurring.

7. How much does it typically cost to repair OBDII code B396A?

- The cost of repairing this code can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor costs. It is recommended to consult with a professional mechanic for an accurate estimate.

8. Can extreme weather conditions trigger OBDII code B396A?

- Yes, extreme weather conditions such as excessive heat or moisture can potentially affect the liftgate motor's performance and lead to the malfunction indicated by this OBDII code.

9. Are there any preventive maintenance measures to avoid OBDII code B396A?

- Regularly inspecting and maintaining the liftgate system, keeping it clean and well-lubricated, and addressing any issues promptly can help prevent the occurrence of this code.

10. Can a DIY enthusiast repair OBDII code B396A at home?

- While some basic troubleshooting steps can be performed at home, repairing OBDII code B396A may require specialized tools and expertise. It is recommended to consult a professional mechanic for proper diagnosis and repair.