Engine-Codes.com
Engine-Codes – Generic – B396C

B396C Code - Liftgate Mode Switch Circuit Performance Signal Invalid

Quick Answer

The B396C code indicates that there is a problem with the liftgate mode switch circuit performance signal in the vehicle. Common causes include Defective liftgate mode switch, Damaged wiring or connectors in the circuit, Malfunctioning control module. 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
B396C indicates Liftgate Mode Switch Circuit Performance Signal Invalid.
Common causes
Common causes include Defective liftgate mode switch, Damaged wiring or connectors in the circuit, Malfunctioning control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 11, 2024
💬 Need more help? Ask Auto Expert for instant answers — it's free!
AutoCodes App

Fix Your Car Smarter

Try the New AutoCodes App!

Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.

AutoCodes App on Google Play

Code B396C Description

The B396C code indicates that there is a problem with the liftgate mode switch circuit performance signal in the vehicle. The liftgate mode switch is responsible for controlling the operation of the liftgate, allowing it to open and close properly. When this circuit performance signal is deemed invalid, it means that there is a malfunction in the system that is preventing it from operating as intended.

OBDII Code B396C - Liftgate Mode Switch Circuit Performance Signal Invalid
B396C Code - Liftgate Mode Switch Circuit Performance Signal Invalid

Common Causes of B396C

  1. Defective liftgate mode switch.
  2. Damaged wiring or connectors in the circuit.
  3. Malfunctioning control module.
  4. Water or moisture intrusion causing corrosion.
  5. Electrical short circuits in the system.

Symptoms of B396C

  1. Liftgate not responding to the switch command.
  2. Inability to open or close the liftgate.
  3. Warning lights illuminated on the dashboard.
  4. Unusual noises or movements when attempting to operate the liftgate.

How to Fix B396C

  1. Begin by conducting a thorough visual inspection of the liftgate mode switch, wiring, and connectors for any visible damage or corrosion.
  2. Use a multimeter to test the continuity of the circuit and ensure that the switch is sending the correct signals to the control module.
  3. If necessary, replace the liftgate mode switch with a new, OEM part to ensure proper functionality.
  4. Repair or replace any damaged wiring or connectors in the circuit to restore proper electrical connections.
  5. Clear the diagnostic trouble codes from the vehicle's system and perform a test to confirm that the issue has been resolved.

Cost to Fix B396C

The typical repair costs for addressing the B396C code can vary depending on the extent of the damage and the specific parts needed for the repair. In general, replacing a faulty liftgate mode switch can cost between $100 and $200, while repairing damaged wiring or connectors may add additional costs. Labor rates at auto repair shops typically range from $80 to $150 per hour, so the total cost for this repair could be anywhere from $200 to $500 or more, including parts and labor. It is advisable to consult with a professional technician to obtain a more accurate estimate based on the specific vehicle make and model.

Need more information about the B396C code?

Need more information on how to fix the B396C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B396C code diagnosed by a professional: Find a repair shop in your area

Code B396C Information for Specific Makes

  • B396C Buick — Liftgate Mode Switch Circuit Performance Signal Invalid
  • B396C Cadillac — Liftgate Mode Switch Circuit Performance Signal Invalid
  • B396C Chevrolet — Liftgate Mode Switch Circuit Performance Signal Invalid
  • B396C GMC — Liftgate Mode Switch Circuit Performance Signal Invalid
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 B396C Code

1. What are common symptoms of OBDII code B396C (Liftgate Mode Switch Circuit Performance Signal Invalid)?

The common symptoms of code B396C include malfunctioning liftgate operation, erratic behavior of the liftgate mode switch, and illumination of the check engine light.

2. What could cause OBDII code B396C to trigger?

Code B396C might be triggered due to a faulty liftgate mode switch, damaged wiring or connectors in the liftgate circuit, or a malfunction in the liftgate control module.

3. How can I diagnose the cause of OBDII code B396C?

To diagnose the cause of code B396C, you can perform a visual inspection of the liftgate mode switch, check the wiring and connectors for any damage, and use a diagnostic scanner to retrieve additional fault codes and data related to the liftgate system.

4. What are some repair tips for resolving OBDII code B396C?

Repair tips for resolving code B396C may include replacing the liftgate mode switch if faulty, repairing or replacing damaged wiring or connectors, and resetting the liftgate control module after making necessary repairs.

5. Can OBDII code B396C be cleared/reset without fixing the underlying issue?

Clearing or resetting code B396C without fixing the underlying issue may temporarily turn off the check engine light, but the code is likely to reappear if the root cause, such as a faulty liftgate mode switch, is not addressed.

6. Is it safe to continue driving with OBDII code B396C active?

It is generally not recommended to continue driving with OBDII code B396C active, as it can lead to further damage to the liftgate system and potentially compromise the safety and functionality of the vehicle.

7. How much does it typically cost to repair OBDII code B396C?

The cost of repairing OBDII code B396C can vary depending on the specific cause of the issue, the extent of the repairs needed, and labor rates in your area. It is advisable to consult a professional mechanic for an accurate estimate.

8. Can I fix OBDII code B396C myself, or do I need a mechanic?

While some DIY enthusiasts may be able to diagnose and repair OBDII code B396C themselves, it is recommended to seek the expertise of a qualified mechanic, especially when dealing with complex electrical systems like the liftgate circuit.

9. Are there any preventive measures to avoid OBDII code B396C in the future?

To prevent OBDII code B396C from recurring, you can regularly inspect the liftgate system for any signs of wear or damage, avoid putting excessive strain on the liftgate, and address any liftgate-related issues promptly.

10. How long does it take to repair OBDII code B396C?

The time required to repair OBDII code B396C can vary based on the underlying cause and the complexity of the repairs needed. Simple fixes like replacing a faulty liftgate mode switch may take a few hours, while more intricate wiring repairs could take longer.

Discuss the causes and fixes for B396C OBDII Code

Submit a New Comment

Code B396C comments

No comments found for this page.