OBD Guide
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B2644

Electric Compressor Output Line Open

B2644 is an OBD-II diagnostic trouble code meaning: Electric Compressor Output Line Open. Common causes: broken or damaged wiring harness, compressor relay fault. Estimated repair cost: $56–222.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$56–222 (est.)

Symptoms

  • Lack of cold air in the cabin
  • Air conditioner doesn't work
  • Check Engine Light Is On
  • Reduced hybrid system efficiency (if applicable)

Causes

  • Broken or damaged wiring harness
  • Compressor relay fault
  • Problems with connectors or contacts
  • Electric compressor malfunction
  • Problems with the climate control unit

How to Fix

  1. Check wiring harness for damage
  2. Check compressor relays and fuses
  3. Inspect connectors and contacts for oxidation
  4. Check compressor circuit resistance
  5. If necessary, replace the electric compressor

Related codes

B2645B2646P0532

FAQ

What does the B2644 code mean?

B2644 is an OBD-II diagnostic trouble code that indicates: Electric Compressor Output Line Open

What causes a B2644 error code?

The most common causes of B2644 include: Broken or damaged wiring harness; Compressor relay fault; Problems with connectors or contacts; Electric compressor malfunction.

How do I fix a B2644 diagnostic trouble code?

To fix B2644: Check wiring harness for damage. Check compressor relays and fuses. Inspect connectors and contacts for oxidation. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B2644?

Limited driving only, diagnose soon

How much does it cost to fix B2644?

The estimated repair cost for B2644 is $56–222. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat