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Engine-Codes – Acura – B1659 Acura

B1659 Acura Code - Front Interior LF Antenna Circuit Short

Quick Answer

The B1659 code for Acura vehicles indicates a problem with the front interior LF (Left Front) antenna circuit, specifically a short circuit. Common causes include Wiring damage or corrosion, Faulty LF antenna, Short circuit in the LF antenna circuit. 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
B1659 Acura indicates Front Interior LF Antenna Circuit Short.
Common causes
Common causes include Wiring damage or corrosion, Faulty LF antenna, Short circuit in the LF antenna circuit.
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 14, 2024
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Code B1659 Acura Description

The B1659 code for Acura vehicles indicates a problem with the front interior LF (Left Front) antenna circuit, specifically a short circuit. The LF antenna is responsible for receiving signals from the key fob to unlock or lock the doors, as well as for the vehicle's immobilizer system. A short circuit in this circuit can disrupt the communication between the key fob and the vehicle, leading to issues with remote keyless entry and starting the engine.

OBDII Code B1659 Acura - Front Interior LF Antenna Circuit Short
B1659 Acura Code - Front Interior LF Antenna Circuit Short

Common Causes of B1659 Acura

  1. Wiring damage or corrosion
  2. Faulty LF antenna
  3. Short circuit in the LF antenna circuit
  4. Electrical interference
  5. Water damage to the antenna or wiring

Symptoms of B1659 Acura

  1. Key fob not working properly
  2. Difficulty in unlocking or locking doors remotely
  3. Vehicle not starting
  4. Malfunction indicator light (MIL) illuminated on the dashboard

How to Fix B1659 Acura

  1. Begin by diagnosing the specific cause of the short circuit in the LF antenna circuit using a diagnostic scanner.
  2. Inspect the wiring and antenna for any damage, corrosion, or loose connections. Repair or replace any damaged components.
  3. Check for any electrical interference or water damage that may be affecting the LF antenna circuit.
  4. Clear the diagnostic trouble codes (DTCs) from the vehicle's memory using the diagnostic scanner.
  5. Test the LF antenna circuit to ensure that the issue has been resolved and that the key fob is functioning properly.

Cost to Fix B1659 Acura

The typical repair costs for addressing a front interior LF antenna circuit short in an Acura vehicle can range from $150 to $400, including parts and labor. However, it's important to note that the actual cost may vary depending on the specific diagnosis time and labor rates at auto repair shops. Rates can vary based on factors such as location, vehicle make and model, and engine type. It's recommended to check with local auto repair shops for a more accurate estimate.

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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 B1659 Acura Code

1. What does the OBDII code B1659 mean on an Acura?

B1659 indicates a problem in the Front Interior LF (Left Front) Antenna Circuit, typically a short to ground or another wiring issue.

2. What are the symptoms of the B1659 code in an Acura?

Common symptoms include issues with the keyless entry system, failure to detect the key fob, or intermittent starting problems.

3. What causes the B1659 code to appear?

The code is often caused by a shorted or damaged antenna circuit, corroded connectors, faulty wiring, or a malfunctioning LF antenna.

4. Can a faulty key fob cause the B1659 code?

No, a faulty key fob is unlikely to trigger this code. The issue is specific to the LF antenna circuit.

5. How do I diagnose the B1659 code on my Acura?

Start by inspecting the LF antenna and its wiring for damage or corrosion, then use a multimeter to check for shorts or continuity issues in the circuit.

6. Can I drive my Acura with the B1659 code active?

Yes, but you may experience keyless entry or start system malfunctions, which could cause inconvenience.

7. How much does it cost to fix the B1659 code on an Acura?

Repair costs vary but typically range from $100 to $300, depending on whether wiring repairs or antenna replacement is needed.

8. Is the B1659 code specific to certain Acura models?

While it can appear on various Acura models, it is more common in models with advanced keyless entry systems.

9. What tools are needed to fix the B1659 code?

You’ll need a multimeter, an OBDII scanner, and possibly basic hand tools to inspect and repair the antenna circuit.

10. Can clearing the B1659 code solve the problem?

Clearing the code without addressing the underlying issue will not fix the problem, and the code will likely reappear.

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