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B27CD Infiniti Code - Electric Compressor Motor Current Limit

Quick Answer

The B27CD code for Infiniti vehicles indicates an issue with the electric compressor motor current limit. Common causes include Electrical faults, such as a short circuit in the compressor motor, Malfunctioning compressor motor, Wiring issues, such as damaged or corroded wires. 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
B27CD Infiniti indicates Electric Compressor Motor Current Limit.
Common causes
Common causes include Electrical faults, such as a short circuit in the compressor motor, Malfunctioning compressor motor, Wiring issues, such as damaged or corroded wires.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B27CD Infiniti Description

The B27CD code for Infiniti vehicles indicates an issue with the electric compressor motor current limit. In modern vehicles, the air conditioning system relies on an electric compressor to circulate refrigerant and cool the interior. The compressor motor is designed to operate within a specific current range to ensure efficient and reliable performance. When the current exceeds the predetermined limit, the vehicle's onboard computer detects this anomaly and triggers the B27CD diagnostic trouble code (DTC).

OBDII Code B27CD Infiniti - Electric Compressor Motor Current Limit
B27CD Infiniti Code - Electric Compressor Motor Current Limit

Common Causes of B27CD Infiniti

  1. Electrical faults, such as a short circuit in the compressor motor.
  2. Malfunctioning compressor motor.
  3. Wiring issues, such as damaged or corroded wires.
  4. Faulty connectors or control module.

Symptoms of B27CD Infiniti

  1. Reduced cooling performance from the air conditioning system.
  2. Unusual noises coming from the compressor motor.
  3. The air conditioning system may intermittently stop working.
  4. The vehicle's engine may run hotter than usual due to the lack of cooling.

How to Fix B27CD Infiniti

  1. Begin by conducting a thorough inspection of the compressor motor, wiring, and connectors to identify any visible damage or faults.
  2. Test the compressor motor's current draw to determine if it falls within the specified range. If it exceeds the limit, the motor may need to be replaced.
  3. Check the vehicle's wiring harness for any signs of wear or damage. Repair or replace any faulty wiring as needed.
  4. Inspect the connectors and control module for proper functionality. Replace any components that are not operating correctly.
  5. Clear the B27CD code from the vehicle's computer system using a diagnostic tool, and test the air conditioning system to ensure that the issue has been resolved.

Cost to Fix B27CD Infiniti

The cost of repairing the electric compressor motor current limit issue can vary depending on the specific cause of the problem and the extent of the repairs needed. In general, replacing a compressor motor can range from $500 to $1000, including parts and labor. Wiring repairs and connector replacements may cost an additional $100 to $300. It's important to note that diagnostic time and labor rates at auto repair shops can vary, so it's advisable to check with local providers for a more accurate estimate.

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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 B27CD Infiniti Code

1. What are the common symptoms of OBDII code B27CD in an Infiniti related to the Electric Compressor Motor Current Limit?

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

2. What are the possible causes of OBDII code B27CD in an Infiniti?

Possible causes of this code may include a faulty electric compressor motor, damaged wiring or connectors, low refrigerant levels, or an issue with the compressor clutch.

3. How can I diagnose the Electric Compressor Motor Current Limit issue in my Infiniti?

Diagnosing this issue typically involves using a diagnostic scan tool to read the OBDII code, checking the compressor motor and related components for any visible damage, and testing the electrical connections.

4. Can I continue driving my Infiniti with OBDII code B27CD related to the Electric Compressor Motor Current Limit?

It is not recommended to drive the vehicle 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. What are some repair tips for fixing OBDII code B27CD in an Infiniti?

Repair tips may include replacing the electric compressor motor if it's found to be faulty, repairing any damaged wiring or connectors, ensuring proper refrigerant levels, and addressing any issues with the compressor clutch.

6. Is it possible to reset OBDII code B27CD in an Infiniti without fixing the underlying issue?

While you can clear the code using a diagnostic scan tool, it's crucial to address the root cause of the problem to prevent the code from reoccurring and to ensure your air conditioning system functions properly.

7. How much does it typically cost to repair OBDII code B27CD related to the Electric Compressor Motor Current Limit in an Infiniti?

The cost of repairs can vary depending on the exact cause of the issue and labor rates in your area. It's recommended to get a diagnosis from a professional technician to determine the specific repair cost.

8. Can a DIY enthusiast fix OBDII code B27CD in an Infiniti themselves?

While some aspects of diagnosing and repairing this code may be tackled by experienced DIY enthusiasts, it's recommended to consult a professional technician for proper diagnosis and repair to ensure the issue is resolved correctly.

9. Will OBDII code B27CD cause any long-term damage to my Infiniti if left unfixed?

Leaving this code unresolved can potentially lead to further damage to the air conditioning system, resulting in more extensive and costly repairs down the line. It's best to address the issue promptly.

10. How long does it typically take to repair OBDII code B27CD related to the Electric Compressor Motor Current Limit in an Infiniti?

The repair time can vary depending on the exact cause of the issue and the availability of parts. In general, it may take a few hours to a full day to diagnose and repair the problem, but this can vary.

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