Engine-CodesAcura – B1647 Acura

B1647 Acura Code - Passenger Door LF Antenna Circuit Short

Quick Answer

The B1647 Acura code indicates a problem with the Passenger Door LF Antenna Circuit Short. Common causes include Wiring damage in the antenna circuit, Faulty antenna components, Water intrusion in the door causing corrosion. 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
B1647 Acura indicates Passenger Door LF Antenna Circuit Short.
Common causes
Common causes include Wiring damage in the antenna circuit, Faulty antenna components, Water intrusion in the door causing corrosion.
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 09, 2024
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Code B1647 Acura Description

The B1647 Acura code indicates a problem with the Passenger Door LF Antenna Circuit Short. This means that there is a short circuit in the antenna system located in the passenger door of the vehicle. The antenna system is responsible for receiving signals for various functions such as keyless entry, remote start, and tire pressure monitoring.

OBDII Code B1647 Acura - Passenger Door LF Antenna Circuit Short
B1647 Acura Code - Passenger Door LF Antenna Circuit Short

Common Causes of B1647 Acura

  1. Wiring damage in the antenna circuit
  2. Faulty antenna components
  3. Water intrusion in the door causing corrosion
  4. Corrosion in the antenna circuit connections
  5. Electrical short circuit in the antenna system

Symptoms of B1647 Acura

  1. Inability to unlock or lock the passenger door remotely
  2. Keyless entry system not working properly
  3. Tire pressure monitoring system showing inaccurate readings
  4. Intermittent issues with remote start function

How to Fix B1647 Acura

  1. Begin by inspecting the wiring and antenna components in the passenger door for any visible damage or corrosion.
  2. Test the antenna circuit using a multimeter to identify the location of the short circuit.
  3. Replace any damaged wiring or antenna components as needed.
  4. Check for water intrusion in the door and address any leaks or drainage issues.
  5. Clear any corrosion in the antenna circuit connections and ensure proper grounding.

Cost to Fix B1647 Acura

The typical repair costs for addressing a Passenger Door LF Antenna Circuit Short can range from $150 to $300, including parts and labor. However, actual costs may vary depending on the specific diagnosis time and labor rates at auto repair shops. It's advisable to obtain quotes from different shops to determine the most cost-effective option for resolving this issue.

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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 B1647 Acura Code

1. What are the common symptoms of OBDII code B1647 in an Acura related to the Passenger Door LF Antenna Circuit Short?

The common symptoms include issues with the keyless entry system, difficulty locking or unlocking the doors using the key fob, and a warning light illuminated on the dashboard.

2. What are the possible causes of the OBDII code B1647 in an Acura?

Potential causes of this code include a short circuit in the LF antenna wiring, damaged antenna module, faulty antenna amplifier, or a problem with the key fob itself.

3. How can I diagnose the Passenger Door LF Antenna Circuit Short issue in my Acura?

Diagnosing the problem involves checking the LF antenna wiring for any visible damage, testing the antenna module and amplifier for proper functionality, and ensuring the key fob is transmitting signals correctly.

4. Can I repair the Passenger Door LF Antenna Circuit Short issue in my Acura myself?

If you have experience with automotive electrical systems, you may attempt to repair the issue by replacing the damaged wiring, antenna module, or amplifier. However, seeking professional help is recommended for complex electrical problems.

5. Is it safe to drive my Acura with the OBDII code B1647 related to the Passenger Door LF Antenna Circuit Short?

While the vehicle may still be drivable with this code, it is advisable to address the issue promptly to avoid potential problems with the keyless entry system or security features.

6. How much does it typically cost to repair the Passenger Door LF Antenna Circuit Short issue in an Acura?

The cost of repairing this issue can vary depending on the specific cause of the problem, parts needed for replacement, and labor charges. It is recommended to obtain quotes from automotive professionals for an accurate estimate.

7. Will resetting the OBDII code B1647 in my Acura make the issue go away?

Resetting the code may temporarily clear the warning light, but it will not fix the underlying problem causing the Passenger Door LF Antenna Circuit Short. It is important to diagnose and address the root cause of the issue.

8. Can extreme weather conditions affect the Passenger Door LF Antenna Circuit in an Acura?

Yes, extreme temperatures or exposure to moisture can potentially damage the LF antenna components, leading to a circuit short and triggering the OBDII code B1647.

9. Are there any preventive measures to avoid encountering the Passenger Door LF Antenna Circuit Short issue in my Acura?

Regularly inspecting the antenna wiring for signs of wear or damage, keeping the key fob in good condition, and protecting the antenna components from harsh weather conditions can help prevent this issue.

10. How long does it typically take to repair the Passenger Door LF Antenna Circuit Short issue in an Acura?

The repair time can vary depending on the extent of the damage and the availability of replacement parts. Simple fixes may only take a few hours, while more complex issues could require a day or more to complete.

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