B1645 Honda Code - Driver Door LF Antenna Circuit Short
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
- B1645 Honda indicates Driver Door LF Antenna Circuit Short.
- 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 B1645 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 B1645 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 B1645 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 B1645 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 B1645 Honda code?
Need more information on how to fix the B1645 Honda code? Get Access to Factory Service Manuals
Need Help with the Code?
Get the B1645 Honda code diagnosed by a professional: Find a repair shop in your area
Frequently Asked Questions about B1645 Honda Code
1. What are the common symptoms of OBDII code B1645 on a Honda related to the Driver Door LF Antenna Circuit Short?
The common symptoms include issues with the keyless entry system, difficulty locking or unlocking the driver door, and a malfunctioning alarm system.
2. What are the possible causes of the Driver Door LF Antenna Circuit Short code B1645 in a Honda?
Possible causes include a damaged or faulty LF antenna in the driver door, wiring issues in the antenna circuit, or a problem with the keyless entry module.
3. How can I diagnose the Driver Door LF Antenna Circuit Short code B1645 on my Honda?
Diagnosis typically involves inspecting the LF antenna in the driver door for damage, checking the wiring for any shorts or breaks, and testing the keyless entry system components for proper functionality.
4. Can I still drive my Honda with the OBDII code B1645 related to the Driver Door LF Antenna Circuit Short?
You can still drive your Honda with this code, but you may experience issues with the keyless entry system, door locking/unlocking, and alarm functionality.
5. Is it possible to repair the OBDII code B1645 on a Honda related to the Driver Door LF Antenna Circuit Short myself?
Depending on your experience and knowledge, you may be able to repair it yourself by replacing the LF antenna, repairing any damaged wiring, or addressing issues with the keyless entry module.
6. Will resetting the OBDII code B1645 related to the Driver Door LF Antenna Circuit Short on my Honda make the problem go away?
Resetting the code may temporarily clear the error code, but it will not fix the underlying issue causing the Driver Door LF Antenna Circuit Short.
7. How much does it typically cost to repair the OBDII code B1645 on a Honda for the Driver Door LF Antenna Circuit Short?
The cost of repair can vary depending on the exact cause of the issue, but it may involve replacing the LF antenna, repairing wiring, or addressing problems with the keyless entry module.
8. Can extreme weather conditions cause the OBDII code B1645 related to the Driver Door LF Antenna Circuit Short to appear on a Honda?
Extreme weather conditions can potentially affect the LF antenna or wiring in the driver door, leading to issues that trigger the code.
9. Is it necessary to visit a dealership to fix the OBDII code B1645 on a Honda related to the Driver Door LF Antenna Circuit Short?
While visiting a dealership is an option, independent automotive repair shops or experienced DIYers may also be able to diagnose and repair the issue effectively.
10. How urgent is it to address the OBDII code B1645 related to the Driver Door LF Antenna Circuit Short on a Honda?
While it may not pose an immediate safety risk, addressing the issue promptly is recommended to ensure proper functioning of the keyless entry system and door security features.
Discuss the causes and fixes for B1645 Honda OBDII Code
Code B1645 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.
