Keyless/Power Door Locks/Security System Symptom Troubleshooting Index

WARNING: This page is about a different car, the 2022 Honda Accord, 2021 Honda Accord, 2020 Honda Accord, 2019 Honda Accord, and 2018 Honda Accord. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: If the door lock system and the keyless operation do not work, troubleshoot the door locks first. The system does not function when turn the vehicle to the ON mode.

Symptom	Check Items	Also Check for
All the doors will not lock or unlock with the driver's door key cylinder, door outer handle, or keyless remote	Poor ground (G501) Blown No. B49 fuse Body control module input test Power window master switch input test Remote test
Driver's door will not lock or unlock	Poor ground (G502) Blown No. B12 and No. B21 fuses Door switch test (check the door switch ON/OFF information with the HDS) Body control module input test Power window master switch input test Door lock actuator test
Front passenger's door will not lock or unlock	Poor ground (G503) Blown No. B3 and No. B13 fuses Body control module input test Door switch test (check the door switch ON/OFF information with the HDS) Door lock actuator test
Left rear door will not lock or unlock	Poor ground (G601) Blown No. B2 and No. B11 fuses Body control module input test Door switch test (check the door switch ON/OFF information with the HDS) Door lock actuator test
Right rear door will not lock or unlock	Poor ground (G602) Blown No. B3 and No. B13 fuses Body control module input test Door switch test (check the door switch ON/OFF information with the HDS) Door lock actuator test
Passenger doors will not unlock with the remote or key cylinder switch, but will unlock with the inside door lock switch	Driver's door lock knob switch test (check for door lock knob switch ON/OFF information with the HDS) Driver's door key cylinder switch test (check for door key cylinder switch ON/OFF information with the HDS)
Doors automatically relock 30 seconds after being unlocked with the remote even though a door has been opened	Symptom troubleshooting
Auto door unlock does not work	Symptom troubleshooting
Security alarm system will not arm	Symptom troubleshooting
The horns do not sound and/or the headlights do not flash when the PANIC button on the remote is pressed	Symptom troubleshooting
The security system sounds randomly while the doors are locked	Tripped sensor recall