OBD Guide
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B27F0

Refrigerant Channel Switching 2 Way Type Valve

B27F0 is an OBD-II diagnostic trouble code meaning: Refrigerant Channel Switching 2 Way Type Valve. Common causes: open or short circuit in wiring harness, valve solenoid malfunction. Estimated repair cost: $56–167.

Severity
⚠️ Medium
Can you drive?
Do not drive — repair immediately
Approx. repair cost
$56–167 (est.)

Symptoms

  • Reduced air conditioner efficiency
  • Uneven interior cooling
  • Noises or knocking noises from the air conditioning system
  • Error indication on the instrument panel

Causes

  • Open or short circuit in wiring harness
  • Valve solenoid malfunction
  • Valve jam
  • Refrigerant leak
  • Air conditioning system dirty
  • Low refrigerant level

How to Fix

  1. Check the refrigerant level and top up the system if necessary.
  2. Check the integrity of the wiring harness and connections
  3. Check the operation of the valve solenoid
  4. Replace faulty valve if necessary
  5. Clean the air conditioning system from contaminants
  6. Reset the error and check the system operation

Related codes

B27F1B27F2B2790

FAQ

What does the B27F0 code mean?

B27F0 is an OBD-II diagnostic trouble code that indicates: Refrigerant Channel Switching 2 Way Type Valve

What causes a B27F0 error code?

The most common causes of B27F0 include: Open or short circuit in wiring harness; Valve solenoid malfunction; Valve jam; Refrigerant leak.

How do I fix a B27F0 diagnostic trouble code?

To fix B27F0: Check the refrigerant level and top up the system if necessary.. Check the integrity of the wiring harness and connections. Check the operation of the valve solenoid. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27F0?

Do not drive — repair immediately

How much does it cost to fix B27F0?

The estimated repair cost for B27F0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat