check engine light on, key can not take out from ignition barrel

Key problem could be either the tumbler that is worn out or possibly a shiftlock cable that either broke or just came loose. Check engine light could be a variety of emissions related issues. You did not specify which sensors you had replaced, so not able to elaborate on that particular repair. I recommend to bring the car to a Volvo specialist to get a proper diagnosis.

Verify the shift lock release button is not sticking. This is a very common problem that will cause the key to stick in the ignition. Can you provide the codes that are stored in the engine computer? Otherwise we cannot advise other than to say take it to a shop. thx