The ignition switch is stuck.

Refer to Ignition and Key Alarm Switch Assembly - Disassemble - Off Vehicle and Ignition and Key Alarm Switch Assembly - Assemble - Off Vehicle .

The lock cylinder is faulty or the lock bolt spring is broken.

Replace the lock cylinder.

Refer to Steering Column Lock Cylinder Set - Off Vehicle .

The housing is damaged.

Refer to Ignition and Key Alarm Switch Assembly - Disassemble - Off Vehicle and Ignition and Key Alarm Switch Assembly - Assemble - Off Vehicle

The transmission linkage adjustment is incorrect.

Adjust the linkage.

Refer to Shift Cable Adjustment .