DTC B2251: Back Door Closer Switch Malfunction: Description

"Back door" refers to the luggage compartment door.
DTC B2251 is output when there is a malfunction in the half-latch switch, striker switch, or courtesy switch of the luggage compartment door closer assembly.

DTC Code	DTC Detection Condition	Trouble Area
B2251	When luggage door is opening or closing, malfunction occurs in half-latch switch, striker switch, or courtesy switch of luggage compartment door closer assembly	Luggage compartment door closer assembly Wire harness Luggage closer motor assembly (power trunk opener and closer ECU)