AutoCodes – Infiniti – B2643 Infiniti

B2643 Infiniti Code - Electric Compressor Output Line Short

Quick Answer

The Inverter in the electric compressor outputs high-voltage to operate the motor. 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
B2643 Infiniti indicates Electric Compressor Output Line Short.
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 548
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Jan 09, 2020
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Code B2643 Infiniti Description

The Inverter in the electric compressor outputs high-voltage to operate the motor. If there is an open or short in the output circuit, the inverter in the electric compressor will stop compressor operation and output the Diagnostic Trouble Code (DTC). The output DTC will be memorized as a past and present DTC. Compressor control may not resume unless the ignition switch is turned OFF, and waiting for 10 minutes.
OBDII Code B2643 Infiniti - Electric Compressor Output Line Short - AutoCodes.com
B2643 Infiniti Code - Electric Compressor Output Line Short

What are the Possible Causes of the DTC B2643 Infiniti?

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

How to Fix the DTC B2643 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 B2643 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 B2643 Infiniti code?

Need more information on how to fix the B2643 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B2643 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 B2643 Infiniti Code

1. What are the common symptoms of OBDII code B2643 in an Infiniti related to the Electric Compressor Output Line Short?

- Common symptoms include the air conditioning system not functioning properly, lack of cold air from the vents, and potential issues with the electric compressor.

2. What can cause the OBDII code B2643, Electric Compressor Output Line Short, in an Infiniti?

- The code B2643 can be triggered by a short in the electric compressor output line, damaged wiring, or a faulty electric compressor.

3. How can I diagnose the Electric Compressor Output Line Short issue in my Infiniti triggering code B2643?

- Diagnosis involves checking the wiring harness for damage, inspecting the electric compressor connections, and testing the electric compressor itself for proper functionality.

4. Is it safe to drive my Infiniti with the OBDII code B2643 related to an Electric Compressor Output Line Short?

- It is not recommended to drive the vehicle with this issue as it can lead to further damage to the air conditioning system and potentially affect other components.

5. Can I reset the B2643 code on my Infiniti related to the Electric Compressor Output Line Short without fixing the issue?

- While you can clear the code temporarily, it will likely return until the root cause of the Electric Compressor Output Line Short is resolved.

6. Are there any DIY repair tips for fixing the Electric Compressor Output Line Short issue causing code B2643 in an Infiniti?

- DIY repair tips include visually inspecting the wiring for any visible damage, checking the connectors for corrosion, and ensuring the electric compressor is securely connected.

7. How much does it cost to repair the Electric Compressor Output Line Short issue triggering code B2643 in an Infiniti?

- The cost of repair can vary depending on the extent of the damage and whether the electric compressor needs to be replaced. It's best to consult with a professional for an accurate estimate.

8. Can a faulty electric compressor be the sole reason for the OBDII code B2643 in an Infiniti?

- Yes, a faulty electric compressor can cause the Electric Compressor Output Line Short issue and trigger code B2643 in an Infiniti. It's essential to diagnose the root cause accurately.

9. Will fixing the Electric Compressor Output Line Short issue in my Infiniti improve the overall performance of the air conditioning system?

- Yes, resolving the Electric Compressor Output Line Short issue will likely restore proper functionality to the air conditioning system, ensuring cold air is distributed effectively.

10. How long does it typically take to repair the Electric Compressor Output Line Short problem associated with code B2643 in an Infiniti?

- The repair time can vary depending on the extent of the issue and the availability of parts. In general, it may take a few hours to a day to complete the repair successfully.

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