AutoCodes – Generic – B1573

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

Quick Answer

The Body Control Module (BCM) monitors the Door Ajar Left Right Switch. Common causes include Faulty Door Ajar Left Right Switch, Door Ajar Left Right Switch harness is open or shorted, Door Ajar Left Right 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: B1573 indicates Door Ajar Left Right Switch Circuit Short To Battery.
Common causes: Common causes include Faulty Door Ajar Left Right Switch, Door Ajar Left Right Switch harness is open or shorted, Door Ajar Left Right 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 5,458

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 04, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1573 Description

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

OBDII Code B1573 - Door Ajar Left Right Switch Circuit Short To Battery - AutoCodes.com — B1573 Code - Door Ajar Left Right Switch Circuit Short To Battery

What does this mean?

What are the Possible Causes of the DTC B1573?

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

How to Fix the DTC B1573?

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 B1573 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 B1573 code?

Need more information on how to fix the B1573 code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1573 code diagnosed by a professional: Find a repair shop in your area

Information for Specific Makes

B1573 Lexus — Short In Telephone Antenna Circuit
B1573 Toyota — Short In Telephone Antenna Circuit

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.