AutoCodes – Infiniti – B27A0 Infiniti

B27A0 Infiniti Code - Intake Door Motor

Quick Answer

A/C Auto Amplifier operates intake door motor according to the target value of the Potentiometer Balance Resister (PBR) opening angle at 40% when performing self-diagnosis. Common causes include Faulty Intake Door Motor, Intake Door Motor harness is open or shorted, Intake Door Motor 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: B27A0 Infiniti indicates Intake Door Motor.
Common causes: Common causes include Faulty Intake Door Motor, Intake Door Motor harness is open or shorted, Intake Door Motor 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 632

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 B27A0 Infiniti Description

A/C Auto Amplifier operates intake door motor according to the target value of the Potentiometer Balance Resister (PBR) opening angle at 40% when performing self-diagnosis. The Diagnostic Trouble Code (DTC) when the PBR opening angle of intake door motor is 50% or more. (PBR feedback signal voltage of the intake door motor is 2.5 V or more).

OBDII Code B27A0 Infiniti - Intake Door Motor - AutoCodes.com — B27A0 Infiniti Code - Intake Door Motor

What does this mean?

What are the Possible Causes of the DTC B27A0 Infiniti?

Faulty Intake Door Motor
Intake Door Motor harness is open or shorted
Intake Door Motor circuit poor electrical connection
Faulty A/C Auto Amplifier

How to Fix the DTC B27A0 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 B27A0 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 B27A0 Infiniti code?

Need more information on how to fix the B27A0 Infiniti code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B27A0 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 B27A0 Infiniti Code

1. What are common symptoms of an OBDII code B27A0 related to the Intake Door Motor in an Infiniti?

The common symptoms include issues with the HVAC system, such as inconsistent airflow or temperature control.

2. What could cause the OBDII code B27A0 related to the Intake Door Motor in an Infiniti?

The code is typically triggered by a malfunction in the intake door motor or its associated components, such as wiring issues or a faulty control module.

3. How can I diagnose the OBDII code B27A0 in my Infiniti related to the Intake Door Motor?

Diagnosing the issue involves using a professional OBDII scanner to retrieve the specific fault code, followed by inspecting the intake door motor, wiring, and control module for any visible damage or defects.

4. What are the recommended steps to repair the OBDII code B27A0 related to the Intake Door Motor in an Infiniti?

Repair steps may include replacing the intake door motor, repairing any damaged wiring, or reprogramming the control module to resolve the issue.

5. Can I drive my Infiniti with the OBDII code B27A0 related to the Intake Door Motor?

It is not recommended to drive the vehicle with this code unresolved, as it can lead to further HVAC system issues and discomfort while driving.

6. How much does it typically cost to repair the OBDII code B27A0 related to the Intake Door Motor in an Infiniti?

Repair costs can vary depending on the extent of the damage and the specific components that need to be replaced, but it's advisable to consult a professional mechanic for an accurate estimate.

7. Are there any preventive measures to avoid the OBDII code B27A0 related to the Intake Door Motor in my Infiniti?

Regular maintenance of the HVAC system, including checking for any unusual sounds or airflow issues, can help identify potential problems early and prevent the code from occurring.

8. Can a DIY enthusiast fix the OBDII code B27A0 related to the Intake Door Motor in an Infiniti?

While some basic troubleshooting steps can be performed by DIY enthusiasts, resolving the issue may require specialized tools and expertise, so it's best to consult a professional mechanic for proper diagnosis and repair.

9. How long does it take to repair the OBDII code B27A0 related to the Intake Door Motor in an Infiniti?

The repair time can vary depending on the exact cause of the issue and the availability of replacement parts, but it's advisable to consult with a mechanic for a more accurate estimate.

10. Will resetting the OBDII system clear the B27A0 code related to the Intake Door Motor in my Infiniti?

Resetting the OBDII system may temporarily clear the code, but if the underlying issue with the intake door motor is not addressed, the code is likely to reappear. It's important to diagnose and repair the root cause of the problem.