B1664 Acura Code - Rear Interior LF Antenna Circuit Open
Quick Answer
The remote is equipped with a keyless transmitter, and all doors can be locked and unlocked by a lock/unlock button operation, even from a remote distance from the vehicle. Common causes include Faulty Rear Interior Low Frequency (LF) Antenna, Rear Interior Low Frequency (LF) Antenna harness is open or shorted, Rear Interior Low Frequency (LF) Antenna 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
- B1664 Acura indicates Rear Interior LF Antenna Circuit Open.
- Common causes
- Common causes include Faulty Rear Interior Low Frequency (LF) Antenna, Rear Interior Low Frequency (LF) Antenna harness is open or shorted, Rear Interior Low Frequency (LF) Antenna 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.
Code B1664 Acura Description
The front interior, the middle interior, and the rear interior Low Frequency (LF) antennas send the signals to the remote of inside the vehicle. The driver's door outer handle, the front passenger's door outer handle, and the rear bumper LF antennas send the signals to the remote of outside the vehicle.
What are the Possible Causes of the DTC B1664 Acura?
- Faulty Rear Interior Low Frequency (LF) Antenna
- Rear Interior Low Frequency (LF) Antenna harness is open or shorted
- Rear Interior Low Frequency (LF) Antenna circuit poor electrical connection
- Faulty Keyless Access Control Unit
How to Fix the DTC B1664 Acura?
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 B1664 Acura 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.
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Frequently Asked Questions about B1664 Acura Code
1. What does the OBDII code B1664 mean on an Acura?
The code B1664 indicates an issue with the Rear Interior Left Front (LF) Antenna Circuit, specifically an open circuit.
2. What are the common symptoms of the B1664 code?
Common symptoms include keyless entry or push-button start not functioning properly, intermittent key recognition, or error messages related to the key fob.
3. What causes the B1664 code on an Acura?
The code is typically caused by a damaged antenna, a broken or disconnected wire in the circuit, corroded connectors, or a malfunctioning control module.
4. Can I still drive my Acura with the B1664 code?
Yes, the vehicle is still drivable, but features like keyless entry or push-button start may not work reliably until the issue is resolved.
5. How do I diagnose the B1664 code?
Start by checking the antenna and its wiring for physical damage or disconnections, inspect the connectors for corrosion, and test the circuit for continuity using a multimeter.
6. How can I fix the B1664 code on my Acura?
The fix may involve repairing or replacing damaged wiring, cleaning corroded connectors, or replacing the rear interior LF antenna if it is faulty.
7. What tools are needed to repair the B1664 code?
You’ll need a multimeter to test circuit continuity, basic hand tools for accessing components, and possibly replacement parts like wiring or the antenna unit.
8. How much does it cost to fix the B1664 code?
The repair cost depends on the extent of the damage. Replacing wiring or connectors may cost around $50–$150, while a new antenna unit could cost $100–$300 plus labor.
9. Can a weak key fob battery trigger the B1664 code?
No, a weak key fob battery will not typically cause this code. However, it may affect keyless entry functionality, so it’s a good idea to rule it out as a separate issue.
10. Should I clear the B1664 code after repairs?
Yes, after completing repairs, clear the code using an OBDII scanner and check if the issue persists to confirm the problem is resolved.
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