MVS Volvo Forums contributor cn90 shows us how to fix P80 ignitions when the steering lock pin breaks, and how to save $270 on a new tumbler:
Those of you familiar with the infamous Ignition Tumbler issue (key does not go past position I, car stuck in parking lot etc.), rejoice, there is a FREE Fix!
I wrote a DIY: 1998 Volvo V70 Ignition Switch & Cylinder Lock below at 90K. It happens again at 165K and I am not going to shell out another $270 for the ignition tumbler… Related thread: DIY: 1998 Volvo V70 Ignition Switch & Cylinder Lock
I confirmed that the SW Lock no longer functions: with key out of ignition, the SW is free to move R and L. This confirms that the small little piece (the Steering Lock pin) broke off and jammed the ignition tumbler.