DTC 41: Body Control Ecu Switch Circuit Malfunction: DTC Detecting Condition
WARNING: This page is about a different car, the 2003 Toyota Camry and 2002 Toyota Camry. However, it is still accessible from the selected car via links, so may be relevant.
DTC 41 will set when a normally open switch is detected closed or when a normally closed switch is detected open during operation of the applicable system.