Driver Door LF Antenna Circuit Open
Table of contents
B1646 ACURA Possible Causes
- 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 do I fix code B1646 ACURA?
Check the “Possible Causes” listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector’s pins.
Cost of diagnosing the B1646 ACURA code
The cost of diagnosing the B1646 ACURA code is 1.0 hour of labor. The auto repair labor rates vary by location, your vehicle’s make and model, and even your engine type. Most auto repairs shops charge between $75 and $150 per hour.
Possible Symptoms
- Engine Light ON (or Service Engine Soon Warning Light)
B1646 ACURA Description
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. When the remote lock button or the remote unlock button is pressed, the keyless transmitter sends the applicable switch signal to the keyless access control unit. After receiving the authentication at the keyless access control unit, then the door lock signals are sent to MICU through B-CAN.
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.
