Engine-CodesFord – B1572 Ford

B1572 Ford Code - Door Ajar Left Right Switch Circuit Open

Quick Answer

The B1572 Ford code indicates that there is an issue with the Door Ajar Left Right Switch Circuit being open. Common causes include Faulty door ajar sensor, Broken or damaged wiring in the door jamb, Corrosion or debris affecting sensor function. 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
B1572 Ford indicates Door Ajar Left Right Switch Circuit Open.
Common causes
Common causes include Faulty door ajar sensor, Broken or damaged wiring in the door jamb, Corrosion or debris affecting sensor function.
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.
Table of contents Created and updated by William Orellana on Sep 06, 2024
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Code B1572 Ford Description

The B1572 Ford code indicates that there is an issue with the Door Ajar Left Right Switch Circuit being open. This means that the vehicle's computer has detected a problem with the door ajar sensor on either the left or right side of the vehicle. The door ajar sensor is responsible for detecting whether a door is open or closed, and when it malfunctions, it can lead to various issues with the vehicle's systems.

OBDII Code B1572 Ford - Door Ajar Left Right Switch Circuit Open
B1572 Ford Code - Door Ajar Left Right Switch Circuit Open

Common Causes of B1572 Ford

  1. Faulty door ajar sensor
  2. Broken or damaged wiring in the door jamb
  3. Corrosion or debris affecting sensor function
  4. Issue with the vehicle's computer system
  5. Poor connection or loose wiring in the circuit

Symptoms of B1572 Ford

  1. Interior lights staying on when doors are closed
  2. Door ajar warning light constantly illuminated on dashboard
  3. Inaccurate door status displayed on instrument panel
  4. Alarm system triggering intermittently
  5. Power door locks not functioning properly

How to Fix B1572 Ford

  1. Inspect the door ajar sensor and wiring for damage or corrosion
  2. Test the sensor's functionality using a multimeter
  3. Replace the faulty sensor or repair damaged wiring as needed
  4. Clear the diagnostic trouble code from the vehicle's computer
  5. Perform a final test to ensure the issue has been resolved

Cost to Fix B1572 Ford

The typical repair costs for addressing the B1572 Ford code can vary depending on the specific cause of the issue. In general, the cost of parts for a new door ajar sensor can range from $50 to $150, while labor costs can add another $100 to $200. Overall, the total repair cost for this issue may range from $150 to $350. As mentioned earlier, it's important to consider factors like location, vehicle make and model, and labor rates when determining the final cost of repairs.

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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 B1572 Ford Code

1. What are the common symptoms of OBDII code B1572 Ford (Door Ajar Left Right Switch Circuit Open)?

- The common symptoms include the door ajar warning light staying illuminated on the dashboard, interior lights remaining on while driving, and issues with power door locks.

2. What causes the OBDII code B1572 Ford to trigger?

- This code is typically triggered by a faulty left or right door ajar switch, wiring issues, or a poor connection in the circuit.

3. How can I diagnose the Door Ajar Left Right Switch Circuit Open issue?

- You can diagnose this issue by visually inspecting the door ajar switches, checking the wiring for any damage or corrosion, and using a multimeter to test the circuit continuity.

4. Can a faulty door latch cause the B1572 Ford code to appear?

- Yes, a faulty door latch can sometimes cause issues with the door ajar switches and trigger the B1572 code.

5. What are some repair tips for fixing the Door Ajar Left Right Switch Circuit Open problem?

- Repair tips may include cleaning the door ajar switches, repairing or replacing damaged wiring, ensuring proper connections, and resetting the OBDII system after making repairs.

6. Is it safe to continue driving with the B1572 Ford code active?

- While it may not affect the drivability of the vehicle, it is recommended to address the issue promptly to prevent potential battery drain or other electrical problems.

7. Can I reset the B1572 Ford trouble code without fixing the underlying issue?

- Resetting the code without fixing the underlying problem will likely result in the code reappearing once the issue is detected again by the vehicle's system.

8. Are there any recalls or service bulletins related to the B1572 Ford code?

- It is advisable to check with your local Ford dealership or visit the manufacturer's website to see if there are any recalls or service bulletins related to this specific OBDII code.

9. How long does it typically take to repair the Door Ajar Left Right Switch Circuit Open issue?

- The repair time can vary depending on the exact cause of the problem, but it may take anywhere from 30 minutes to a few hours to diagnose and fix the issue.

10. Can I fix the B1572 Ford code myself, or do I need to take my vehicle to a professional mechanic?

- Depending on your experience and comfort level with automotive repairs, you may be able to fix the issue yourself by following repair guides and using the necessary tools. If in doubt, it's best to consult a professional mechanic for assistance.

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