AutoCodes – Infiniti – B2640 Infiniti

B2640 Infiniti Code - Electric Compressor Main Voltage Minimum

Quick Answer

The Inverter monitors power voltage from the main battery in the circuit. Common causes include Faulty Electric Compressor, Electric Compressor harness is open or shorted, Electric Compressor 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: B2640 Infiniti indicates Electric Compressor Main Voltage Minimum.
Common causes: Common causes include Faulty Electric Compressor, Electric Compressor harness is open or shorted, Electric Compressor 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 454

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 Jan 09, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2640 Infiniti Description

The Inverter monitors power voltage from the main battery in the circuit. The Inverter it stops compressor control and outputs the Diagnostic Trouble Code (DTC) when the monitored voltage is outside the specified range. The output DTC of B2640 are memorized only present trouble.

OBDII Code B2640 Infiniti - Electric Compressor Main Voltage Minimum - AutoCodes.com — B2640 Infiniti Code - Electric Compressor Main Voltage Minimum

What does this mean?

What are the Possible Causes of the DTC B2640 Infiniti?

Faulty Electric Compressor
Electric Compressor harness is open or shorted
Electric Compressor circuit poor electrical connection
Faulty Inverter

How to Fix the DTC B2640 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 B2640 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 B2640 Infiniti code?

Need more information on how to fix the B2640 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2640 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 B2640 Infiniti Code

1. What are the common symptoms of OBDII code B2640 in an Infiniti related to the Electric Compressor Main Voltage Minimum?

- Common symptoms include the air conditioning system not cooling effectively, unusual noises coming from the compressor, and the AC not turning on at all.

2. What could be the possible causes triggering OBDII code B2640 in an Infiniti?

- The code B2640 could be caused by a faulty electric compressor, issues with the compressor clutch, wiring problems, or a low refrigerant level.

3. How can I diagnose the Electric Compressor Main Voltage Minimum issue in my Infiniti?

- Diagnosis typically involves checking the compressor for proper operation, inspecting the wiring and connections for any damage, and using a scan tool to read the OBDII code and determine the specific issue.

4. Can I continue driving my Infiniti with OBDII code B2640 without repairing it immediately?

- It is not recommended to continue driving with this code as it can lead to further damage to the air conditioning system. It's best to address the issue promptly to avoid potential costly repairs.

5. Are there any DIY repair tips for fixing OBDII code B2640 in an Infiniti?

- DIY repair tips include checking the compressor clutch operation, inspecting the wiring for any visible damage, and ensuring the refrigerant level is adequate. However, complex electrical or compressor issues may require professional assistance.

6. How much does it typically cost to repair OBDII code B2640 in an Infiniti?

- The cost of repair can vary depending on the extent of the issue. Simple fixes like replacing a fuse or repairing a wire may be relatively inexpensive, while compressor or clutch replacements can be more costly.

7. Can resetting the OBDII code B2640 in my Infiniti resolve the issue temporarily?

- Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the code to trigger. It's crucial to diagnose and address the root cause of the issue.

8. Is the OBDII code B2640 specific to certain models or years of Infiniti vehicles?

- The code B2640 related to Electric Compressor Main Voltage Minimum can be found in various Infiniti models that are equipped with electronic compressor systems.

9. What are the risks of ignoring OBDII code B2640 in an Infiniti for an extended period?

- Ignoring the code can lead to further damage to the air conditioning system, potential compressor failure, and decreased overall performance of the AC system.

10. How long does it typically take to repair OBDII code B2640 in an Infiniti?

- The repair time can vary based on the specific issue causing the code. Simple fixes may take a few hours, while more complex repairs involving compressor replacement can take longer.