OBD Guide
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B27B8

Electric Compressor Over Loaded

B27B8 is an OBD-II diagnostic trouble code meaning: Electric Compressor Over Loaded. Common causes: compressor bearings jamming, short circuit in power supply. Estimated repair cost: $167–556.

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

Symptoms

  • Climate control does not work
  • Compressor overheating
  • Reduced cooling efficiency
  • Noise when the compressor is running

Causes

  • Compressor bearings jamming
  • Short circuit in power supply
  • Control module malfunction
  • Mechanical damage to the compressor

How to Fix

  1. Check the condition of the compressor visually
  2. Diagnose the electrical circuit of the compressor
  3. Check control module
  4. Replace compressor if necessary

Related codes

B27B7B27B9

FAQ

What does the B27B8 code mean?

B27B8 is an OBD-II diagnostic trouble code that indicates: Electric Compressor Over Loaded

What causes a B27B8 error code?

The most common causes of B27B8 include: Compressor bearings jamming; Short circuit in power supply; Control module malfunction; Mechanical damage to the compressor.

How do I fix a B27B8 diagnostic trouble code?

To fix B27B8: Check the condition of the compressor visually. Diagnose the electrical circuit of the compressor. Check control module. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27B8?

Limited driving only, diagnose soon

How much does it cost to fix B27B8?

The estimated repair cost for B27B8 is $167–556. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat