AutoCodes – Nissan – B2640 Nissan

B2640 Nissan 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 Nissan 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 701

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

What does this mean?

What are the Possible Causes of the DTC B2640 Nissan?

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

How to Fix the DTC B2640 Nissan?

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 Nissan 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 Nissan code?

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

Need Help with the Code?

Get the B2640 Nissan 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 Nissan Code

1. What are the common symptoms of OBDII code B2640 Electric Compressor Main Voltage Minimum in a Nissan?

The common symptoms include the air conditioning system not cooling effectively, unusual noises coming from the compressor, and the AC system not working at all.

2. What are the possible causes of OBDII code B2640 in a Nissan?

Possible causes include a faulty electric compressor, issues with the compressor wiring or connectors, low refrigerant levels, or a malfunctioning compressor control module.

3. How can I diagnose the OBDII code B2640 in my Nissan?

Diagnosis typically involves checking the compressor wiring and connectors for any damage, testing the compressor for proper function, inspecting refrigerant levels, and using a scan tool to retrieve and clear the code.

4. Can I drive my Nissan with the B2640 code present?

It is not recommended to drive your Nissan with the B2640 code present, as it can lead to further damage to the air conditioning system. It is best to address the issue promptly.

5. How can I repair OBDII code B2640 in a Nissan?

Repair options may include replacing the electric compressor, repairing any damaged wiring or connectors, recharging the refrigerant, or resetting the compressor control module.

6. Will resetting the OBDII code B2640 clear the issue permanently?

Resetting the code may temporarily clear the issue, but if the root cause of the problem is not addressed, the code is likely to reappear. It is crucial to diagnose and fix the underlying problem.

7. Can a DIY enthusiast fix the OBDII code B2640 in a Nissan?

Depending on your skill level and access to tools, some DIY enthusiasts may be able to address the issue themselves by following repair guides or seeking help from online forums. However, complex issues may require professional assistance.

8. Is OBDII code B2640 specific to Nissan vehicles only?

While B2640 is a Nissan-specific code related to the electric compressor main voltage minimum, similar issues may occur in other vehicle makes and models with electric compressor systems.

9. How much does it typically cost to repair OBDII code B2640 in a Nissan?

The cost of repair can vary depending on the exact cause of the issue, labor rates in your area, and whether you choose to address the problem yourself or take your Nissan to a dealership or mechanic.

10. Are there any preventive measures to avoid encountering OBDII code B2640 in a Nissan?

Regular maintenance of the air conditioning system, checking refrigerant levels, and addressing any unusual noises or performance issues promptly can help prevent the occurrence of OBDII code B2640 in your Nissan.