AutoCodes – Nissan – B27A6 Nissan

B27A6 Nissan Code - Mode Door Motor

Quick Answer

A/C Auto Amplifier operates intake door motor according to the target value of the Potentiometer Balance Resister (PBR). Common causes include Faulty Mode Door Motor, Mode Door Motor harness is open or shorted, Mode 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: B27A6 Nissan indicates Mode Door Motor.
Common causes: Common causes include Faulty Mode Door Motor, Mode Door Motor harness is open or shorted, Mode 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 1,177

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 B27A6 Nissan Description

A/C Auto Amplifier operates intake door motor according to the target value of the Potentiometer Balance Resister (PBR). The Diagnostic Trouble Code (DTC) when the A/C Auto Amplifier detects a short or open circuit of mode door motor drive signal terminal 1.

OBDII Code B27A6 Nissan - Mode Door Motor - AutoCodes.com — B27A6 Nissan Code - Mode Door Motor

What does this mean?

What are the Possible Causes of the DTC B27A6 Nissan?

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

How to Fix the DTC B27A6 Nissan?

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 B27A6 Nissan 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.

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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 B27A6 Nissan Code

1. What are the common symptoms of OBDII code B27A6 Nissan related to the Mode Door Motor?

- Common symptoms include inconsistent air distribution from the HVAC system, lack of airflow control, or unusual noises coming from the dashboard area.

2. What can cause the OBDII code B27A6 Nissan to be triggered for the Mode Door Motor?

- The code can be triggered by a faulty mode door motor, a broken or stuck mode door, wiring issues, or a malfunctioning HVAC control unit.

3. How can I diagnose the Mode Door Motor issue triggering code B27A6 in my Nissan?

- Diagnose by checking for any visible damage to the mode door motor, testing the motor's functionality, inspecting the mode door for obstructions, and scanning the HVAC system for any other related codes.

4. Can I still drive my Nissan with the OBDII code B27A6 related to the Mode Door Motor?

- It is generally safe to drive the vehicle with this code, but you may experience issues with the HVAC system's airflow control or temperature regulation until the problem is resolved.

5. What are some DIY repair tips for fixing the Mode Door Motor issue causing code B27A6 in my Nissan?

- DIY repair tips include checking and replacing any blown fuses related to the HVAC system, ensuring proper wiring connections, and attempting to reset the HVAC control unit.

6. Is it recommended to reset the OBDII code B27A6 related to the Mode Door Motor after making repairs?

- Yes, it is recommended to reset the code using an OBDII scanner after resolving the underlying issue to clear the fault memory and ensure the repair was successful.

7. How much does it typically cost to repair or replace the Mode Door Motor in a Nissan when triggering code B27A6?

- The cost of repair or replacement can vary depending on the extent of the damage and whether you choose to do it yourself or take it to a professional. Costs can range from $100 to $500 or more.

8. Can a faulty Mode Door Motor triggering code B27A6 affect other components in the HVAC system of my Nissan?

- Yes, a faulty mode door motor can disrupt the entire HVAC system's performance, affecting airflow, temperature control, and overall comfort inside the vehicle.

9. Are there any preventive maintenance steps I can take to avoid triggering the OBDII code B27A6 related to the Mode Door Motor in my Nissan?

- Regularly servicing the HVAC system, checking for any unusual noises or airflow issues, and addressing any minor HVAC problems promptly can help prevent the occurrence of this code.

10. How long does it typically take to replace the Mode Door Motor in a Nissan when dealing with the OBDII code B27A6 issue?

- The replacement process can vary depending on the model of the Nissan and the accessibility of the mode door motor, but it usually takes around 1-3 hours for a skilled technician to complete the job.