OBD Guide
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B27B7

Electric Compressor Current Sensor

B27B7 is an OBD-II diagnostic trouble code meaning: Electric Compressor Current Sensor. Common causes: current sensor fault, open or shorted wiring harness. Estimated repair cost: $56–167.

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

Symptoms

  • Air conditioner doesn't work
  • Increased noise from the compressor
  • Reduced cooling efficiency

Causes

  • Current sensor fault
  • Open or shorted wiring harness
  • Poor contact in connectors
  • Electric compressor malfunction

How to Fix

  1. Check the integrity of the wiring harness
  2. Check the contacts in the sensor connectors
  3. Replace current sensor if necessary
  4. Check compressor operation

Related codes

B27B6B27B8

FAQ

What does the B27B7 code mean?

B27B7 is an OBD-II diagnostic trouble code that indicates: Electric Compressor Current Sensor

What causes a B27B7 error code?

The most common causes of B27B7 include: Current sensor fault; Open or shorted wiring harness; Poor contact in connectors; Electric compressor malfunction.

How do I fix a B27B7 diagnostic trouble code?

To fix B27B7: Check the integrity of the wiring harness. Check the contacts in the sensor connectors. Replace current sensor if necessary. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B27B7?

Limited driving only, diagnose soon

How much does it cost to fix B27B7?

The estimated repair cost for B27B7 is $56–167. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat