AutoCodes – Generic – B27B2

B27B2 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 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 647

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 Description

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

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

What does this mean?

What are the Possible Causes of the DTC B27B2?

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?

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 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 code?

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

Need Help with the Code?

Get the B27B2 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B27B2 Infiniti — Electric Compressor High Voltage
B27B2 Nissan — Electric Compressor High Voltage

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 Code

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

- Common symptoms include the air conditioning system not cooling properly, unusual noises coming from the compressor, and the AC system shutting off unexpectedly.

2. What are the possible causes of OBDII code B27B2?

- Possible causes include a malfunctioning electric compressor, wiring issues, high voltage in the system, or a faulty compressor control module.

3. How can I diagnose the Electric Compressor High Voltage issue?

- You can diagnose the issue by using a diagnostic scanner to retrieve the OBDII code B27B2, visually inspecting the compressor and wiring, and testing the voltage levels in the system.

4. Can I still drive my vehicle with OBDII code B27B2 present?

- It is not recommended to drive the vehicle with this code present, as it can lead to further damage to the air conditioning system and potentially cause overheating issues.

5. How can I repair OBDII code B27B2 (Electric Compressor High Voltage)?

- Repair options include replacing the electric compressor, repairing or replacing damaged wiring, resetting the compressor control module, and clearing the OBDII code with a diagnostic scanner.

6. Is it safe to reset the OBDII code B27B2 without repairing the issue?

- Resetting the code without addressing the underlying problem may temporarily clear the error code, but the issue will likely resurface, causing further problems with the air conditioning system.

7. Will OBDII code B27B2 affect the overall performance of my vehicle?

- Yes, OBDII code B27B2 can impact the performance of your vehicle by compromising the functionality of the air conditioning system, leading to discomfort for occupants during hot weather.

8. Can a DIY enthusiast repair OBDII code B27B2 at home?

- While some basic diagnostic steps can be performed at home, repairing OBDII code B27B2 often requires specialized tools and expertise, so it is recommended to consult a professional mechanic.

9. How much does it typically cost to repair OBDII code B27B2?

- The cost of repairing OBDII code B27B2 can vary depending on the specific issue, but it may range from a few hundred to over a thousand dollars, including parts and labor.

10. Are there any preventive measures to avoid OBDII code B27B2 in the future?

- To prevent OBDII code B27B2, it's essential to perform regular maintenance on your vehicle's air conditioning system, such as checking for leaks, keeping refrigerant levels correct, and addressing any unusual noises promptly.