B1646 Honda Code - Driver Door 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 Driver Door Low Frequency (LF) Antenna, Driver Door Low Frequency (LF) Antenna harness is open or shorted, Driver Door 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
- B1646 Honda indicates Driver Door LF Antenna Circuit Open.
- Common causes
- Common causes include Faulty Driver Door Low Frequency (LF) Antenna, Driver Door Low Frequency (LF) Antenna harness is open or shorted, Driver Door 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 B1646 Honda 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 B1646 Honda?
- Faulty Driver Door Low Frequency (LF) Antenna
- Driver Door Low Frequency (LF) Antenna harness is open or shorted
- Driver Door Low Frequency (LF) Antenna circuit poor electrical connection
- Faulty Keyless Access Control Unit
How to Fix the DTC B1646 Honda?
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 B1646 Honda 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 B1646 Honda code?
Need more information on how to fix the B1646 Honda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1646 Honda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1646 Honda Code
1. What are common symptoms of OBDII code B1646 in a Honda related to the Driver Door LF Antenna Circuit Open?
The common symptoms include issues with the central locking system, difficulty unlocking or locking the driver door, and a warning light on the dashboard.
2. What are possible causes of the Driver Door LF Antenna Circuit Open OBDII code in a Honda?
Possible causes include a faulty LF antenna, damaged wiring in the driver door, a loose connection, or a malfunctioning control module.
3. How can I diagnose the Driver Door LF Antenna Circuit Open issue in my Honda?
Diagnosing the problem involves checking the LF antenna for damage, inspecting the wiring in the driver door for any breaks or corrosion, and testing the connections and control module for proper functionality.
4. Can I repair the Driver Door LF Antenna Circuit Open issue in my Honda myself?
Depending on your skill level and access to tools, you may be able to repair the issue yourself by replacing the LF antenna, repairing any damaged wiring, or fixing loose connections. However, it is recommended to consult a professional if you are unsure.
5. Is it safe to continue driving my Honda with the B1646 OBDII code related to the Driver Door LF Antenna Circuit Open?
While the vehicle may still be operable with this issue, it is recommended to address it promptly to avoid potential problems with the central locking system and overall security of the vehicle.
6. Can the B1646 OBDII code be triggered by a simple glitch or temporary issue in a Honda?
Yes, sometimes the code can be triggered by a temporary glitch. In such cases, clearing the code and monitoring the situation may resolve the issue without further intervention.
7. What are the steps to reset the OBDII code B1646 related to the Driver Door LF Antenna Circuit Open in a Honda?
To reset the code, you can use an OBDII scanner to clear the error code. However, it is important to address the underlying issue causing the code before resetting.
8. Will fixing the Driver Door LF Antenna Circuit Open issue in my Honda require specialized tools or equipment?
Repairing the issue may require basic tools like screwdrivers, multimeters, and possibly a replacement LF antenna. Specialized diagnostic equipment may be needed for a more in-depth diagnosis.
9. How can I prevent the recurrence of the OBDII code B1646 related to the Driver Door LF Antenna Circuit Open in my Honda?
Regular maintenance checks, ensuring proper wiring connections, and addressing any issues promptly can help prevent the recurrence of the code in the future.
10. Are there any software updates or recalls related to the B1646 OBDII code in Honda vehicles?
It's recommended to check with a Honda dealership or the manufacturer's website for any software updates or recalls related to the Driver Door LF Antenna Circuit Open issue in your specific Honda model.
Discuss the causes and fixes for B1646 Honda OBDII Code
Code B1646 Honda comments
No comments found for this page.
Fix Your Car Smarter
Try the New AutoCodes App!
Get complete OBDII diagnostics, repair solutions, and cost estimates, plus AI chat support on demand.
