OBD Guide
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B27BB

Electric Compressor High Voltage System

B27BB is an OBD-II diagnostic trouble code meaning: Electric Compressor High Voltage System. Common causes: electric compressor malfunction, damage to high voltage wires. Estimated repair cost: $167–556.

Severity
🔴 High
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$167–556 (est.)

Symptoms

  • Reduced air conditioner efficiency
  • Noise when the compressor is running
  • Check Engine Light Illuminates

Causes

  • Electric compressor malfunction
  • Damage to high voltage wires
  • Problems with control electronics
  • Low refrigerant level

How to Fix

  1. Check refrigerant level
  2. Diagnose a high voltage system
  3. Check the integrity of high-voltage wires
  4. Replace the electric compressor if necessary

Related codes

B27BAB27BCP0A80

FAQ

What does the B27BB code mean?

B27BB is an OBD-II diagnostic trouble code that indicates: Electric Compressor High Voltage System

What causes a B27BB error code?

The most common causes of B27BB include: Electric compressor malfunction; Damage to high voltage wires; Problems with control electronics; Low refrigerant level.

How do I fix a B27BB diagnostic trouble code?

To fix B27BB: Check refrigerant level. Diagnose a high voltage system. Check the integrity of high-voltage wires. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27BB?

Limited driving only, diagnose soon

How much does it cost to fix B27BB?

The estimated repair cost for B27BB is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat