Spark plugs shot at 38,000 miles

So in the middle of a road trip 9 days ago my check engine light came on. I was 2 hours into an 8 hour round trip day trip. I was close to a Toyota dealer so I went there for a diagnosis. They said my MAF bank 1 sensor 1 needed replacing but they didn't have the part so couldn't do the fix but I'd be okay to complete my trip. They collected their $100 and sent me on my way with no warning lights on.

30 minutes later the check engine returns and I'm unable to accelerate. I stop the car for a bit and then am able to continue my trip. I have one other incident where when I was traveling at a low speed, I lost all power. I was able to drive home 4 hours with the check engine light on but no further issues with the exception that I got less than 20 miles a gallon for the trip.

Took my car to a local Toyota dealer. They independently diagnosed that the same sensor needed replacing. They also told me that my spark plugs were shot. According to the service rep, they looked like they were from a car with over 100,000 miles.

Is this possible given the description above from the first time my check engine light came on?

Just posting to find out if anyone has ever had something similar happen in relation to the spark plugs or if it seems legit. I've already asked to have the old parts returned to me so I'll get to see the plugs for myself but not until after I'm out $600 plus for the plugs and sensor replacement.

 

P0171, p2195, p3190, poaof

My understanding is that the p2195 code is what lead to the Bank 1 Sensor 1 replacement recommendation.

I haven't picked my car up yet so I'll be sure to ask about warranty coverage. I know the 3 year/36,000 is out of the question. I don't think the plugs will be covered under powertrain.

 

Yes, I'm the original owner. I've followed the service schedule. The car is not used for commuting with about half the miles coming from longer trips (3-4 hour drives).

Just before all this started, I had my front brakes replaced, back brakes adjusted, and battery replaced.

The cynic in me thinks that when the battery was replaced they messed something up but I really have no proof of that except for the coincidence of the check engine light coming on in the first real drive after having that work done.

 

I've read a few times about that kind of thing related somewhat to these types of problems but I didn't but diesel in my car. I'm not an idiot.

Now that doesn't mean that the gas station I filled up at before my trip didn't sell me sub-par gas. It is a place I don't usually buy from but I have no way to know at this point. It certainly is something I considered as a possibility but there is no way for me to know. And more importantly there is no way I can hold that station accountable.

 

On the brakes, I do think they needed replacing. I could feel that something was up with the brakes and I tend to drive my car hard. If anything the reaction to the brake replacement here tells me I need to adjust my driving habits.

The brake recommendation was initiated by Darcars Toyota of Silver Spring, MD who I don't trust. I took my car to Lee's Auto Service in NE DC. I small shop with people I trust and they confirmed the brakes needed replacing.

The spark plug recommendation was from Jim Coleman Toyota of Bethesda, MD. I just picked the car up after having the plugs and af sensor replaced. Car was running fine for the 8 mile drive home which included some highway driving.

Looks like I'll be on a trip this weekend so I'll find out real soon if this resolved all my issues. As to exactly why and how this all happened, I'm left with a couple possibilities thanks to the replies here but no one thing that I can point at and say, "That's it!"

Picture of the plugs to follow after I've made 5 posts.

 

Picture of the plugs:

 

A couple more photos.





I've now checked my oil thanks to another thread here and it does appear that it is overfilled. I repeated it multiple times with 5 minutes in between and each time the oil is half as much over the second dot as the space between the 2 dots.

My question is what now? I assume I should not drive the car if I don't have to as I could end up with the same thing happening to me that happened the last time I went on a 4 hour drive. Should I go back to the dealer that did the oil change (Darcars, Silver Spring, MD) 4 weeks ago and have them take out the excess oil? ask them to refund me the cost of the oil change and reimburse me for the cost of the other repairs that were done at another dealer because of issue that were generated by my oil being overfilled?

Should I also go back to the dealer that just replaced my spark plugs (Jim Coleman, Bethesda, MD) and complain that it wasn't really needed and ask for my money back?

Should I get the excess oil removed elsewhere and complain directly to Toyota?

Any advice on the best way to handle this now would be greatly appreciated.

As to the question of how hard I'm driving my car, I tend to accelerate aggressively and stop hard. I'm not gentle with my brakes.