AutoCodes – Infiniti – B27B2 Infiniti

B27B2 Infiniti Code - Electric Compressor High Voltage

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the high voltage system input voltage is more than 420 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: B27B2 Infiniti indicates Electric Compressor High 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.

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Code Popularity 460

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 Feb 06, 2020

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B27B2 Infiniti Description

The Diagnostic Trouble Code (DTC) sets when the high voltage system input voltage is more than 420 V.

OBDII Code B27B2 Infiniti - Electric Compressor High Voltage - AutoCodes.com — B27B2 Infiniti Code - Electric Compressor High Voltage

What does this mean?

What are the Possible Causes of the DTC B27B2 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 B27B2 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 B27B2 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 B27B2 Infiniti code?

Need more information on how to fix the B27B2 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B27B2 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 B27B2 Infiniti Code

1. What are the common symptoms of OBDII code B27B2 Infiniti (Electric Compressor High Voltage)?

- Symptoms may include reduced air conditioning performance, unusual noises from the compressor, and potential activation of the vehicle's safety systems.

2. What are some possible causes of OBDII code B27B2 in an Infiniti?

- Common causes include a faulty electric compressor, wiring issues, low refrigerant levels, or a malfunctioning compressor control module.

3. How can I diagnose OBDII code B27B2 in my Infiniti?

- Diagnosis typically involves using a diagnostic scanner to retrieve the specific code, checking the compressor and related components for visual signs of damage, and testing electrical connections for continuity.

4. Can I continue driving my Infiniti with OBDII code B27B2 present?

- It is not recommended to drive the vehicle with this code present, as it may lead to further damage to the air conditioning system and potentially affect the vehicle's overall performance.

5. How can I reset OBDII code B27B2 in my Infiniti?

- To reset the code, you can use an OBDII scanner to clear the code after addressing the underlying issue causing the fault.

6. Is it safe to attempt repairing OBDII code B27B2 in my Infiniti myself?

- Repairing this code may require a certain level of automotive knowledge and experience, especially when dealing with electrical components. It is recommended to consult a professional mechanic for proper diagnosis and repair.

7. What are some repair tips for resolving OBDII code B27B2 in an Infiniti?

- Repair tips may include checking and replacing damaged wiring, inspecting and possibly replacing the electric compressor, testing the compressor control module, and ensuring proper refrigerant levels.

8. How much does it typically cost to repair OBDII code B27B2 in an Infiniti?

- Repair costs can vary depending on the specific issue causing the fault, parts required, and labor rates. It is advisable to obtain quotes from different mechanics or repair shops.

9. Can extreme weather conditions contribute to triggering OBDII code B27B2 in an Infiniti?

- Extreme heat or cold can potentially affect the performance of the electric compressor and other components, leading to the triggering of this fault code.

10. How can I prevent OBDII code B27B2 from recurring in my Infiniti in the future?

- Regular maintenance of the air conditioning system, checking refrigerant levels, and addressing any issues promptly can help prevent the recurrence of this fault code.