OBD Guide
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B1564

Door Ajar Circuit Open

B1564 is an OBD-II diagnostic trouble code meaning: Door Ajar Circuit Open. Common causes: broken door wiring harness, faulty door open sensor. Estimated repair cost: $11–56.

Severity
⚠️ Medium
Can you drive?
Limited driving only, diagnose soon
Approx. repair cost
$11–56 (est.)

Symptoms

  • False door open warning on dashboard
  • Interior lighting malfunction
  • Problems with the central locking

Causes

  • Broken door wiring harness
  • Faulty door open sensor
  • Poor contact in connectors
  • Contact corrosion
  • BCM damage

How to Fix

  1. Check the integrity of the wiring harness between the door and the body
  2. Check the operation of the door open sensor
  3. Clean contacts in connectors
  4. Replace sensor if necessary
  5. Check BCM status

Related codes

B1565B1566B1563

FAQ

What does the B1564 code mean?

B1564 is an OBD-II diagnostic trouble code that indicates: Door Ajar Circuit Open

What causes a B1564 error code?

The most common causes of B1564 include: Broken door wiring harness; Faulty door open sensor; Poor contact in connectors; Contact corrosion.

How do I fix a B1564 diagnostic trouble code?

To fix B1564: Check the integrity of the wiring harness between the door and the body. Check the operation of the door open sensor. Clean contacts in connectors. For a complete diagnosis, use an OBD-II scanner.

Is it safe to drive with B1564?

Limited driving only, diagnose soon

How much does it cost to fix B1564?

The estimated repair cost for B1564 is $11–56. Actual cost depends on your vehicle, location, and labor rates.

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See also: Russian version · NationStat