AutoCodes – Infiniti – B27B1 Infiniti

B27B1 Infiniti Code - Electric Compressor Low Voltage

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the high voltage system input voltage is less than 230 V. 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
B27B1 Infiniti indicates Electric Compressor Low Voltage.
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.
AI answers can be wrong. Verify repairs with testing. Open full chat
Code Popularity 510
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 06, 2020
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Code B27B1 Infiniti Description

The Diagnostic Trouble Code (DTC) sets when the high voltage system input voltage is less than 230 V.
OBDII Code B27B1 Infiniti - Electric Compressor Low Voltage - AutoCodes.com
B27B1 Infiniti Code - Electric Compressor Low Voltage

What are the Possible Causes of the DTC B27B1 Infiniti?

  • Faulty Electric Compressor
  • Electric Compressor harness is open or shorted
  • Electric Compressor circuit poor electrical connection
  • Faulty Li-ion Battery
  • Faulty Power Delivery Module (PDM)

How to Fix the DTC B27B1 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 B27B1 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 B27B1 Infiniti code?

Need more information on how to fix the B27B1 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

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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 B27B1 Infiniti Code

1. What are the common symptoms of OBDII code B27B1 Infiniti (Electric Compressor Low Voltage)?

Common symptoms may include weak or no cold air coming from the air conditioning system, unusual noises from the compressor, and the AC system not cooling as effectively as before.

2. What are the possible causes of OBDII code B27B1 in an Infiniti related to Electric Compressor Low Voltage?

Potential causes may include a faulty electric compressor, issues with the compressor clutch, low refrigerant levels, electrical wiring problems, or a failing compressor control module.

3. How can I diagnose the OBDII code B27B1 in my Infiniti related to Electric Compressor Low Voltage?

Diagnosing this code typically involves using a scan tool to retrieve the specific fault code, checking the compressor and related components for physical damage or wear, testing the electrical connections, and verifying refrigerant levels.

4. What are some repair tips for addressing OBDII code B27B1 in an Infiniti with Electric Compressor Low Voltage?

Repair tips may include replacing the electric compressor if found faulty, repairing or replacing damaged electrical wiring, ensuring proper refrigerant levels, and resetting the system after repairs to clear the code.

5. Can I drive my Infiniti with OBDII code B27B1 related to Electric Compressor Low Voltage?

While it may be possible to drive the vehicle with this code, it is recommended to address the issue promptly to prevent further damage to the AC system and ensure optimal cooling performance.

6. How much does it typically cost to repair OBDII code B27B1 in an Infiniti due to Electric Compressor Low Voltage?

The cost of repairs can vary depending on the specific cause of the code, but it may range from a few hundred to a few thousand dollars, including parts and labor.

7. Are there any preventive maintenance steps I can take to avoid encountering OBDII code B27B1 related to Electric Compressor Low Voltage in my Infiniti?

Regularly servicing the AC system, checking for refrigerant leaks, and addressing any unusual noises or performance issues promptly can help prevent this code from appearing.

8. Will resetting the OBDII code B27B1 related to Electric Compressor Low Voltage on my Infiniti make it go away permanently?

Resetting the code may temporarily clear the warning light, but if the underlying issue is not addressed, the code is likely to reappear once the system detects the problem again.

9. Can a DIY enthusiast without specialized training repair OBDII code B27B1 in an Infiniti due to Electric Compressor Low Voltage?

While some basic troubleshooting steps can be taken by DIY enthusiasts, diagnosing and repairing this code may require specialized tools and expertise, so it is recommended to consult a professional mechanic for proper diagnosis and repair.

10. Is it safe to continue using the AC in my Infiniti if I suspect OBDII code B27B1 related to Electric Compressor Low Voltage?

Continuing to use the AC when this code is present can potentially cause further damage to the compressor and other components, so it is advisable to have the issue inspected and repaired as soon as possible to ensure safe and efficient operation of the system.

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