AutoCodesNissan – B27F1 Nissan

B27F1 Nissan Code - Refrigerant Channel Switching 2 Way Type Valve

Quick Answer

The Diagnostic Trouble Code (DTC) sets when the Heat Pump Control Unit detects a malfunction of the Refrigerant Channel Switching 2 Way Type Valve control signal status, compared to the valve status of the control that is being judged. Common causes include Faulty Refrigerant Channel Switching 2 Way Type Valve, Refrigerant Channel Switching 2 Way Type Valve harness is open or shorted, Refrigerant Channel Switching 2 Way Type Valve 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
B27F1 Nissan indicates Refrigerant Channel Switching 2 Way Type Valve.
Common causes
Common causes include Faulty Refrigerant Channel Switching 2 Way Type Valve, Refrigerant Channel Switching 2 Way Type Valve harness is open or shorted, Refrigerant Channel Switching 2 Way Type Valve 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 446
How popular is this code, among other codes? Low
Table of contents Created and updated by William Orellana on Feb 10, 2020
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Code B27F1 Nissan Description

The Diagnostic Trouble Code (DTC) sets when the Heat Pump Control Unit detects a malfunction of the Refrigerant Channel Switching 2 Way Type Valve control signal status, compared to the valve status of the control that is being judged.
OBDII Code B27F1 Nissan - Refrigerant Channel Switching 2 Way Type Valve - AutoCodes.com
B27F1 Nissan Code - Refrigerant Channel Switching 2 Way Type Valve

What are the Possible Causes of the DTC B27F1 Nissan?

  • Faulty Refrigerant Channel Switching 2 Way Type Valve
  • Refrigerant Channel Switching 2 Way Type Valve harness is open or shorted
  • Refrigerant Channel Switching 2 Way Type Valve circuit poor electrical connection
  • Faulty Heat Pump Control Unit

How to Fix the DTC B27F1 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 B27F1 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.

Need more information about the B27F1 Nissan code?

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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 B27F1 Nissan Code

1. What does the OBDII code B27F1 mean on a Nissan?

B27F1 indicates an issue with the Refrigerant Channel Switching 2 Way Type Valve, which is part of the vehicle’s air conditioning system.

2. What are the common symptoms of the B27F1 code?

Symptoms may include reduced or no air conditioning performance, inconsistent airflow temperatures, or an illuminated check engine light.

3. What causes the B27F1 code to appear?

Common causes include a malfunctioning refrigerant switching valve, electrical connection issues, or a fault in the HVAC control module.

4. Can I drive my Nissan with the B27F1 code?

Yes, you can drive the vehicle, but the air conditioning system may not function properly, leading to discomfort in certain weather conditions.

5. How can I diagnose the B27F1 code?

Diagnosis typically involves checking the refrigerant valve for blockages, inspecting electrical connections, and using a scan tool to test the HVAC system’s operation.

6. How do I fix the B27F1 code on a Nissan?

Repairs may include cleaning or replacing the refrigerant channel switching valve, repairing faulty wiring, or reprogramming the HVAC control module if needed.

7. What tools are needed to fix the B27F1 code?

A diagnostic scan tool, multimeter, and possibly HVAC servicing tools for refrigerant handling are commonly required.

8. Is the B27F1 code specific to Nissan vehicles?

Yes, the B27F1 code is a manufacturer-specific code used by Nissan to identify issues with the refrigerant channel switching valve.

9. How much does it cost to repair the B27F1 code?

Repair costs vary but can range from $150 to $500, depending on whether the valve needs replacement or if additional wiring repairs are required.

10. Can the B27F1 code trigger other issues in the vehicle?

While it primarily affects the air conditioning system, prolonged operation with this issue could strain other HVAC components.

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