AutoCodes – Generic – B323C

B323C Code - Hands Free Liftgate Sensor Module

Quick Answer

The power liftgate has a feature that detects the motion of a foot under the rear fascia, this allows the operator to open the liftgate when his or her hands are full of packages. Common causes include Faulty Hands Free Liftgate Sensor, Hands Free Liftgate Sensor harness is open or shorted, Hands Free Liftgate Sensor 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: B323C indicates Hands Free Liftgate Sensor Module.
Common causes: Common causes include Faulty Hands Free Liftgate Sensor, Hands Free Liftgate Sensor harness is open or shorted, Hands Free Liftgate Sensor 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 1,101

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 05, 2020

Description
Possible Causes
How To Fix
Tech Notes
Cost to Diagnose
FAQs
Comments
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Code B323C Description

The power liftgate has a feature that detects the motion of a foot under the rear fascia, this allows the operator to open the liftgate when his or her hands are full of packages. As an indicator that the action has been properly preformed, the liftgate hands-free sensor control module will send a serial data message to the liftgate control module to command the liftgate to release and power open and the liftgate control module will send a serial data message to the body control module to command the tail lights to flash 3 times. The Diagnostic Trouble Code (DTC) sets when the liftgate control module detects the calibration files in the hands-free liftgate sensor control module does not match the calibration files contained within the Liftgate Sensor Control Module.

OBDII Code B323C - Hands Free Liftgate Sensor Module - AutoCodes.com — B323C Code - Hands Free Liftgate Sensor Module

What does this mean?

What are the Possible Causes of the DTC B323C?

Faulty Hands Free Liftgate Sensor
Hands Free Liftgate Sensor harness is open or shorted
Hands Free Liftgate Sensor circuit poor electrical connection
Faulty Hands Free Liftgate Sensor Control Module

How to Fix the DTC B323C?

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 does this mean?

Code Tech Notes

B323C 39 Hands Free Liftgate Sensor Module Internal Hardware Failure
B323C 42 Hands Free Liftgate Sensor Module Invalid Calibration Set

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B323C 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 B323C code?

Need more information on how to fix the B323C code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B323C code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B323C Buick — Hands Free Liftgate Sensor Module
B323C Cadillac — Hands Free Liftgate Sensor Module
B323C Chevrolet — Hands Free Liftgate Sensor Module
B323C GMC — Hands Free Liftgate Sensor Module

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 B323C Code

1. What are common symptoms of OBDII code B323C related to the Hands Free Liftgate Sensor Module?

Symptoms may include a malfunctioning hands-free liftgate, failure of the liftgate sensor system, or issues with the liftgate not responding to sensor inputs.

2. What are possible causes of OBDII code B323C for the Hands Free Liftgate Sensor Module?

Potential causes may include a faulty liftgate sensor module, damaged wiring or connectors in the sensor system, or issues with the liftgate control module.

3. How can I diagnose OBDII code B323C for the Hands Free Liftgate Sensor Module?

Diagnosis typically involves using a scan tool to retrieve the code, checking the connections and wiring in the liftgate sensor system, and testing the liftgate sensor module for proper functioning.

4. Can I repair OBDII code B323C related to the Hands Free Liftgate Sensor Module myself?

If you have experience working with automotive electrical systems and access to the necessary tools, you may be able to repair the issue yourself by replacing the faulty sensor module or repairing damaged wiring.

5. Are there any specific repair tips for addressing OBDII code B323C with the Hands Free Liftgate Sensor Module?

Ensure all electrical connections are secure, carefully inspect wiring for any signs of damage, and consider consulting a service manual for your specific vehicle to aid in diagnosis and repair.

6. Is it safe to continue driving with OBDII code B323C related to the Hands Free Liftgate Sensor Module?

While the vehicle may still be operable, it is recommended to address the issue promptly to avoid potential safety hazards or further damage to the liftgate sensor system.

7. How much does it typically cost to repair OBDII code B323C for the Hands Free Liftgate Sensor Module at a professional auto repair shop?

Repair costs can vary depending on the extent of the issue, labor rates in your area, and the specific repairs needed, but it is advisable to obtain quotes from multiple shops for comparison.

8. Can OBDII code B323C for the Hands Free Liftgate Sensor Module cause other problems in the vehicle?

While the code is specific to the Hands Free Liftgate Sensor Module, unresolved issues with the sensor system may impact the functionality of the liftgate and potentially affect other related systems.

9. Are there any recalls or technical service bulletins related to OBDII code B323C and the Hands Free Liftgate Sensor Module?

Check with your vehicle manufacturer or authorized dealership to inquire about any relevant recalls or bulletins that may pertain to this specific OBDII code and sensor module issue.

10. How can I prevent OBDII code B323C from occurring in the future with the Hands Free Liftgate Sensor Module?

Regularly inspect and maintain the liftgate sensor system, avoid physical damage to the sensors, and follow manufacturer guidelines for operating the hands-free liftgate to help prevent future issues with the sensor module.