P Lock Malfunction - whilst driving

Need some advice.

My Prius suffered severe water damage from a faulty windscreen replacement.

After many months, the entire Hybrid system was replaced, however I now have a intermittent problem with the P Lock Malfucntion error coming on and off. After a few days if this, the check Hybrid system message also comes on.

the vehicle has been back to Toyota several times but they cannot seems to find out what is causing this.

since this morning it also feels as if the car is labouring at times losing power

thnks