OBD Guide

B27C0

Electric Compressor Communication Error

B27C0 is an OBD-II diagnostic trouble code meaning: Electric Compressor Communication Error. Common causes: open or short circuit in wiring harness, electric compressor malfunction. Estimated repair cost: $56–167.

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

Symptoms

  • The air conditioning system does not work
  • Check Engine light comes on
  • Reduced engine efficiency

Causes

  • Open or short circuit in wiring harness
  • Electric compressor malfunction
  • Power or grounding problems
  • Software failure in the control unit

How to Fix

  1. Check the integrity of the wiring harness and connections
  2. Check power supply and grounding of the compressor
  3. Test the electric compressor for faults
  4. Update control unit software

Related codes

FAQ

What does the B27C0 code mean?

B27C0 is an OBD-II diagnostic trouble code that indicates: Electric Compressor Communication Error

What causes a B27C0 error code?

The most common causes of B27C0 include: Open or short circuit in wiring harness; Electric compressor malfunction; Power or grounding problems; Software failure in the control unit.

How do I fix a B27C0 diagnostic trouble code?

To fix B27C0: Check the integrity of the wiring harness and connections. Check power supply and grounding of the compressor. Test the electric compressor for faults. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27C0?

Limited driving only, diagnose soon

How much does it cost to fix B27C0?

The estimated repair cost for B27C0 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

See also: Russian version · NationStat