Hello, I bought my first used 2001 Nissan Pathfinder LE 3.5 4WD, it has 164,276 miles on it less than 30 days ago from a dealership as is for $2995. It has a pretty bad windshield cracked all the way across (I will try to post the best pics I can). Took it to a car shop in Colville, WA because that is where I live and they have a pretty good reputation for this small town (Colville, WA) and were recommended by a lot of people who are local as well as a neighbor/friend who has used them for many years. I believe this shop has been in business for 15 years according to googling them and viewing their business profile. They did a diagnostic and the codes P0456/P1140/P1445 popped up. Check engine light is on, the picture showing the gauges/mileage has the seatbelt light and door open light on only because I had the door open to take pic and did not put belt on because I was not driving. I was told by the mechanic that the valves are cracked, open vent line for gas line and leaky cracked seals based on these codes and was quoted $5000 to fix it all! Mechanic said it was a total lemon and to not drive it much at all or I am going to break down. It actually drives really good for me, the 4WD works great, shifts good, heater and AC work, Radio and CD player work fine, security system works, looks great outside condition for it's age (except for the windshield cracked all the way across) and inside looks great for it's age (except for duct tape on the leather middle console that is black matching the color but it does not look too bad at all and it still is perfectly useable for it's function), goes from 2WD to 4WD just fine, all my power windows work, power steering is working, it does favor going to the left a little bit when you let go of the steering wheel on a straight stretch of road but not bad AT ALL, tires are in great condition I believe - good tread all terrain tires the vehicle drives out of my country driveway which is long and icy/snowy and now super muddy because of the snow melting finally since I live 3000+ feet elevation on a rural mountain in the boonies. Car drove three hours from Hayden, ID to my home which 20 minutes outside of Colville, WA just fine and has driven from my home into town (Colville, WA) and back three times now and that is a 40 minute round trip just to town and back to my home on the mountain. Is this mechanic ripping me off asking for $5000 to fix all of this? He said that basically buying this particular vehicle could be compared to buying a Ferrari as far as buying parts for it and difficulty level of being able to put them in. Should I be seriously worried about these codes and is the pricing I got quoted of about $5000 to fix it a total ripoff? PLEASE HELP. I obviously am a woman who knows nothing about cars really. Oil was changed in Feb 2021.