OBD Guide
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B27F5

Refrigerant Channel Switching 3 Way Type Valve

B27F5 is an OBD-II diagnostic trouble code meaning: Refrigerant Channel Switching 3 Way Type Valve. Common causes: mechanical valve failure, broken or damaged wires. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced air conditioner efficiency
  • Complete failure of the air conditioning system
  • Uneven interior cooling
  • Noises during operation of the air conditioning system

Causes

  • Mechanical valve failure
  • Broken or damaged wires
  • Solenoid malfunction
  • Clogged refrigerant passages
  • Problems with the air conditioning control unit

How to Fix

  1. Check the integrity of the wiring harness and connections
  2. Check the operation of the valve solenoid
  3. Clean or replace valve if necessary
  4. Check refrigerant level and quality
  5. Scan the control unit for additional errors

Related codes

B27F0B27F1B27F2B27F3B27F4

FAQ

What does the B27F5 code mean?

B27F5 is an OBD-II diagnostic trouble code that indicates: Refrigerant Channel Switching 3 Way Type Valve

What causes a B27F5 error code?

The most common causes of B27F5 include: Mechanical valve failure; Broken or damaged wires; Solenoid malfunction; Clogged refrigerant passages.

How do I fix a B27F5 diagnostic trouble code?

To fix B27F5: Check the integrity of the wiring harness and connections. Check the operation of the valve solenoid. Clean or replace valve if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27F5?

Limited driving only, diagnose soon

How much does it cost to fix B27F5?

The estimated repair cost for B27F5 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat