AutoCodes – Infiniti – B24B4 Infiniti

B24B4 Infiniti Code - A/C Control Communication

Quick Answer

When A/C Auto Amplifier is not transmitting or receiving a communication signal for 2 or more seconds the Diagnostic Trouble Code (DTC) is set. Common causes include Faulty A/C Switch, A/C Switch harness is open or shorted, A/C Switch 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: B24B4 Infiniti indicates A/C Control Communication.
Common causes: Common causes include Faulty A/C Switch, A/C Switch harness is open or shorted, A/C Switch 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 401

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 Dec 16, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B24B4 Infiniti Description

When A/C Auto Amplifier is not transmitting or receiving a communication signal for 2 or more seconds the Diagnostic Trouble Code (DTC) is set.

OBDII Code B24B4 Infiniti - A/C Control Communication - AutoCodes.com — B24B4 Infiniti Code - A/C Control Communication

What does this mean?

What are the Possible Causes of the DTC B24B4 Infiniti?

Faulty A/C Switch
A/C Switch harness is open or shorted
A/C Switch circuit poor electrical connection
Faulty A/C Auto Amplifier

How to Fix the DTC B24B4 Infiniti?

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 B24B4 Infiniti 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 B24B4 Infiniti code?

Need more information on how to fix the B24B4 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B24B4 Infiniti code diagnosed by a professional: Find a repair shop in your area

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 B24B4 Infiniti Code

1. What does OBDII code B24B4 in an Infiniti indicate?

The B24B4 code in an Infiniti relates to a communication issue with the A/C control system.

2. What are common symptoms of OBDII code B24B4 in an Infiniti?

Common symptoms of code B24B4 may include non-responsive A/C controls, erratic temperature settings, or the inability to adjust fan speed.

3. What are possible causes of OBDII code B24B4 in an Infiniti?

Potential causes of code B24B4 include faulty A/C control module, wiring issues, loose connections, or a malfunctioning temperature sensor.

4. How can I diagnose the OBDII code B24B4 in my Infiniti?

To diagnose code B24B4, you can use an OBDII scanner to read the code, inspect the A/C control module and related wiring, and perform a thorough visual inspection for any visible issues.

5. Can I still drive my Infiniti with OBDII code B24B4?

It is generally safe to drive your Infiniti with code B24B4, but it is recommended to address the issue promptly to avoid potential discomfort from A/C malfunctions.

6. How can I repair OBDII code B24B4 in my Infiniti?

Repairing code B24B4 may involve replacing the A/C control module, repairing faulty wiring or connections, or recalibrating the temperature sensor.

7. Is it possible to reset OBDII code B24B4 in an Infiniti?

You can reset code B24B4 using an OBDII scanner to clear the code after resolving the underlying issue with the A/C control communication.

8. Are there any DIY tips for fixing OBDII code B24B4 in my Infiniti?

DIY tips for fixing code B24B4 include checking and securing all A/C control module connections, inspecting the wiring for damage, and ensuring the temperature sensor is functioning correctly.

9. Can extreme weather conditions trigger OBDII code B24B4 in an Infiniti?

Extreme temperature fluctuations or exposure to moisture can potentially trigger A/C control communication issues leading to code B24B4 in an Infiniti.

10. How long does it typically take to repair OBDII code B24B4 in an Infiniti?

The repair time for code B24B4 can vary depending on the exact cause, but it may take anywhere from 1-3 hours at a repair shop, including diagnosis and part replacement.