AutoCodes – Generic – B1564

B1564 Code - Door Ajar Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Door Ajar Switch. Common causes include Faulty Door Ajar Switch, Door Ajar Switch harness is open or shorted, Door Ajar Switch circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1564 indicates Door Ajar Circuit Open.
Common causes: Common causes include Faulty Door Ajar Switch, Door Ajar Switch harness is open or shorted, Door Ajar Switch circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 5,790

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 02, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1564 Description

The Body Control Module (BCM) monitors the Door Ajar Switch. The BCM sets the OBDII code when the Door Ajar Switch is not to factory specifications.

OBDII Code B1564 - Door Ajar Circuit Open - AutoCodes.com — B1564 Code - Door Ajar Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1564?

Faulty Door Ajar Switch
Door Ajar Switch harness is open or shorted
Door Ajar Switch circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1564?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1564 code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1564 code?

Need more information on how to fix the B1564 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1564 code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1564 Code

1. What are the common symptoms of OBDII code B1564 - Door Ajar Circuit Open?

- Common symptoms include the interior lights staying on, the door ajar warning light staying illuminated on the dashboard, and potential issues with power door locks.

2. What can cause the OBDII code B1564 to trigger?

- The code B1564 is typically triggered by a faulty door ajar switch, damaged wiring in the door jamb, or a malfunctioning body control module.

3. How can I diagnose the cause of OBDII code B1564 - Door Ajar Circuit Open?

- To diagnose the issue, you can visually inspect the door ajar switches, check the wiring for any damage, and use a multimeter to test for continuity and proper voltage at the switch.

4. Can I drive my vehicle with the OBDII code B1564 present?

- While the code itself won't prevent you from driving, it's recommended to address the issue promptly to avoid potential battery drain and other electrical problems.

5. How can I repair OBDII code B1564 - Door Ajar Circuit Open?

- Repairing the code may involve replacing the faulty door ajar switch, repairing damaged wiring, or reprogramming the body control module if necessary.

6. Can a DIY enthusiast fix OBDII code B1564 at home?

- Depending on your experience and access to tools, DIY enthusiasts can troubleshoot and repair OBDII code B1564 by following detailed repair guides and using proper safety precautions.

7. Are there any temporary fixes for OBDII code B1564 - Door Ajar Circuit Open?

- While temporary fixes like manually disconnecting the battery to reset the system may work, it's best to address the root cause of the issue for a permanent solution.

8. What are the implications of ignoring OBDII code B1564 - Door Ajar Circuit Open?

- Ignoring the code can lead to battery drainage, malfunctioning interior lights, and potential safety concerns if the door ajar warning system is not functioning properly.

9. How much does it typically cost to repair OBDII code B1564?

- The cost of repairing OBDII code B1564 can vary depending on the cause of the issue, but it may range from around $100 to $300 for parts and labor.

10. Can a mechanic reset the OBDII code B1564 after repairing the issue?

- Once the underlying cause of the code is fixed, a mechanic can reset the OBDII code B1564 using a diagnostic scanner to clear the error code from the system.