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Engine-Codes – Generic – B1573

B1573 Code - Door Ajar Left Right Switch Circuit Short To Battery

Quick Answer

The diagnostic trouble code B1573 indicates a problem with the Door Ajar Left Right Switch Circuit Short To Battery in the vehicle. Common causes include Damaged wiring in the door ajar switch circuit, Faulty left or right door ajar switch, Malfunctioning control module. 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
B1573 indicates Door Ajar Left Right Switch Circuit Short To Battery.
Common causes
Common causes include Damaged wiring in the door ajar switch circuit, Faulty left or right door ajar switch, Malfunctioning control module.
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.
What is this?
Table of contents Created and updated by William Orellana on Sep 17, 2024
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Code B1573 Description

The diagnostic trouble code B1573 indicates a problem with the Door Ajar Left Right Switch Circuit Short To Battery in the vehicle. This code specifically points to an issue with the circuit that controls the left and right door ajar switches, which are responsible for detecting whether the doors are open or closed. When this circuit is shorted to the battery, it means that there is an unintended connection between the circuit and the vehicle's battery power source. This can result in incorrect signals being sent to the vehicle's computer system, leading to various issues with the door ajar warning system.

OBDII Code B1573 - Door Ajar Left Right Switch Circuit Short To Battery
B1573 Code - Door Ajar Left Right Switch Circuit Short To Battery

Common Causes of B1573

  1. Damaged wiring in the door ajar switch circuit.
  2. Faulty left or right door ajar switch.
  3. Malfunctioning control module.
  4. Corrosion in electrical connections.
  5. Impact or damage to the door causing wiring issues.

Symptoms of B1573

  1. Door ajar warning light stays on even when doors are closed.
  2. Interior lights remain illuminated when doors are shut.
  3. Warning chime sounds intermittently while driving.
  4. Power door locks do not function correctly.
  5. Battery drains quickly due to interior lights staying on.

How to Fix B1573

  1. Begin by inspecting the wiring and connections in the door ajar switch circuit for any damage or corrosion.
  2. Test the left and right door ajar switches to determine if they are functioning correctly.
  3. Check the control module for any faults or malfunctions.
  4. Repair or replace any damaged wiring, switches, or components as needed.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the door ajar warning system to ensure proper functionality.

Cost to Fix B1573

The typical repair costs for addressing the Door Ajar Left Right Switch Circuit Short To Battery code can vary depending on the extent of the damage and the specific components that need to be replaced. On average, the parts required for this repair may cost between $50 to $200, while the labor involved can range from $100 to $300. Overall, the total repair cost could fall between $150 to $500. It's important to note that the actual costs may differ based on the location, make and model of the vehicle, and the rates charged by the auto repair shop. It is advisable to obtain a detailed quote from a trusted mechanic to get a more accurate estimate for this repair.

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Code B1573 Information for Specific Makes

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 B1573 Code

1. What are the common symptoms of OBDII code B1573 (Door Ajar Left Right Switch Circuit Short To Battery)?

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

2. What can cause the OBDII code B1573 to trigger?

- This code is typically triggered by a short circuit between the left or right door ajar switches and the vehicle's battery.

3. How can I diagnose the Door Ajar Left Right Switch Circuit Short To Battery issue?

- Diagnosing this issue usually involves checking the wiring harness, inspecting the door ajar switches, and testing for continuity and shorts in the circuit.

4. Can a faulty door latch cause the B1573 trouble code?

- Yes, a faulty door latch or a misaligned door can sometimes cause the door ajar switches to malfunction, leading to the B1573 trouble code.

5. Is it safe to drive with the OBDII code B1573 active?

- While the vehicle is technically safe to drive with this code, it is recommended to address the issue promptly to avoid potential electrical problems or draining the vehicle's battery.

6. How can I repair the Door Ajar Left Right Switch Circuit Short To Battery problem?

- Repairing this issue often involves fixing the short circuit in the wiring, replacing damaged door ajar switches, or adjusting the door alignment to ensure proper contact with the switches.

7. Are there any DIY tips for troubleshooting the B1573 trouble code?

- DIY troubleshooting tips include visually inspecting the door ajar switches and wiring, checking for loose connections, and using a multimeter to test for continuity and shorts in the circuit.

8. Will resetting the vehicle's computer clear the B1573 trouble code?

- Resetting the vehicle's computer may temporarily clear the trouble code, but it is essential to address the underlying issue causing the B1573 code to prevent it from reoccurring.

9. Can extreme weather conditions affect the Door Ajar Left Right Switch Circuit Short To Battery problem?

- Yes, extreme temperatures or moisture can sometimes lead to electrical issues with the door ajar switches, potentially triggering the B1573 trouble code.

10. How much does it typically cost to repair the OBDII code B1573?

- The cost of repairing the B1573 trouble code can vary depending on the extent of the issue, but it may range from $100 to $300 for parts and labor at a professional auto repair shop.

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