Engine-CodesGeneric – B1743

B1743 Code - Mirror Passenger Vertical Switch Circuit Short To Battery

Quick Answer

The diagnostic trouble code B1743 indicates a Mirror Passenger Vertical Switch Circuit Short To Battery. Common causes include Faulty mirror switch, Wiring issues in the mirror circuit, Short circuit in the mirror 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
B1743 indicates Mirror Passenger Vertical Switch Circuit Short To Battery.
Common causes
Common causes include Faulty mirror switch, Wiring issues in the mirror circuit, Short circuit in the mirror 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.
Table of contents Created and updated by William Orellana on Sep 26, 2024
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Code B1743 Description

The diagnostic trouble code B1743 indicates a Mirror Passenger Vertical Switch Circuit Short To Battery. This means that there is an electrical issue in the circuit that controls the vertical movement of the passenger side mirror. The switch that controls the vertical movement of the mirror is sending a signal indicating a short circuit to the battery. This can lead to the mirror not being able to adjust vertically, which can affect visibility and safety while driving.

OBDII Code B1743 - Mirror Passenger Vertical Switch Circuit Short To Battery
B1743 Code - Mirror Passenger Vertical Switch Circuit Short To Battery

Common Causes of B1743

  1. Faulty mirror switch.
  2. Wiring issues in the mirror circuit.
  3. Short circuit in the mirror control module.
  4. Electrical issues in the vehicle's wiring harness.
  5. Corrosion or damage to the electrical connectors in the mirror circuit.

Symptoms of B1743

  1. Inability to adjust the passenger side mirror vertically.
  2. Mirror moves erratically or in the wrong direction.
  3. Mirror gets stuck in one position.
  4. Warning light on the dashboard related to the mirror system.

How to Fix B1743

  1. Begin by diagnosing the specific cause of the short circuit using a multimeter to test the mirror switch, wiring, and control module.
  2. Replace the faulty mirror switch if it is determined to be the cause of the issue.
  3. Repair or replace any damaged wiring in the mirror circuit.
  4. Check and clean the electrical connectors in the mirror circuit to ensure proper connections.
  5. Clear the diagnostic trouble code from the vehicle's computer system and test the mirror to ensure it is functioning correctly.

Cost to Fix B1743

The typical repair costs for a Mirror Passenger Vertical Switch Circuit Short To Battery can vary depending on the specific cause of the issue and the labor rates at the auto repair shop. On average, the cost of parts for this repair can range from $50 to $200, while labor costs can range from $100 to $300. It is important to note that these are rough estimates, and actual costs may vary based on the location, vehicle make and model, and the extent of the repair needed. It is recommended to consult with a qualified mechanic to get a more accurate estimate for your specific situation.

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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 B1743 Code

1. What does the OBDII code B1743 mean?

B1743 indicates a short to battery in the passenger-side mirror's vertical switch circuit, which controls the vertical movement of the mirror.

2. What are the common symptoms of code B1743?

Symptoms may include the passenger-side mirror not adjusting vertically, erratic mirror movement, or the mirror adjustment switch being unresponsive.

3. What causes the B1743 code to appear?

The code is typically caused by a short circuit in the wiring, a faulty mirror adjustment switch, damaged connectors, or an issue with the mirror motor.

4. How can I diagnose the B1743 code?

Start by inspecting the wiring and connectors for damage or corrosion. Then, test the mirror adjustment switch and the mirror motor for proper functionality.

5. Can I still drive my car with the B1743 code active?

Yes, the issue does not affect drivability, but it may limit the functionality of the passenger-side mirror, which can impact visibility and safety.

6. How do I fix the B1743 code?

Repairs may involve fixing or replacing damaged wiring, cleaning or reconnecting loose connectors, replacing the mirror adjustment switch, or replacing the mirror motor if it's faulty.

7. How much does it cost to repair the B1743 code?

Repair costs vary depending on the issue. Replacing a mirror switch or repairing wiring typically costs $50-$200, while replacing a mirror motor may cost $200-$400.

8. Can I clear the B1743 code without fixing the issue?

Clearing the code without addressing the root cause will only temporarily remove it. The code will likely return once the system detects the fault again.

9. Is the B1743 code specific to certain car brands?

No, the code can appear on any vehicle equipped with OBDII diagnostics, but the exact components involved may vary by make and model.

10. Can a blown fuse cause the B1743 code?

A blown fuse is unlikely to cause this specific code since it points to a short to battery, but it's still worth checking the fuse for the mirror circuit during diagnosis.

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