HONDA · 2019-11-13
ServiceNews Article - The 2020 CR-V comes with two backup fuses: No. 18 BACK UP (10A) and No. 27 BACK UP 2 (30A). If you pull the No. 27 fuse (or it's blown), and turn the ignition to ON while leaving the No. 18 fuse intact, it will set DTC B123F (automatic lighting control unit/sunlight sensor error).