P3190 code after leaving mechanic. No engine power, electrical power dying.

welcome!

how many miles on her?

might be a bad combo meter, or low 12v.

check the inverter reservoir for fluid movement while car is in ready.

check all the fluid levels, including under the radiator cap, and the engine oil.

i would ask what an 'oil valve leak' is specifically, and have them show you. any oil under the car after parking?

 

Check the 12v health first. They may have inadvertently left the car on in ACC mode while in the shop which is a common issue.

 

not a big deal. if it's under a hundred bucks, might be worth it. i would want the engine cleaned so i could be sure it wasn't still happening afterward. at 220k, i wouldn't bother though.

you might want to start monitoring the oil level more closely, to see how many thousands of miles it takes to burn a quart, and look at the ground after parking overnight to make sure the leak isn't getting worse.

 

Welcome! It seems unlikely to me that a low 12V battery would reveal itself after you got on the freeway. By then, the charge should be higher than when you first started the car if the system is working right. But I'd still go ahead and check it.

The oil looks like it's from the oil fill cap since it's all over the top of the valve cover. Maybe just a bad seal there. I'd try that before messing with the valve cover gasket. As @bisco said, clean it up so you can monitor it. Old trick from my motorcycle days: after cleaning, spray some antiperspirant deodorant around the area to leave a white residue. Check daily or more often and you should see exactly where it's coming from.

That said, the oil loss is most likely due to oil burning with that many miles on it.

Did they say why you need new struts? If it's just that the boots are cracked or otherwise shot, I wouldn't worry about it. They'll still probably outlast the car. At 12 years and 220k miles, I personally would not throw any money at it except gas and oil.

You said you had the battery repaired about a year ago. If that means someone threw in a new block or two and called it good, a year is about all I would expect. Probably less, actually. Techstream will tell you if the traction battery has a problem. If your or their OBDII reader isn't Prius fluent, it would not be likely to read those codes.

Good luck with this.

 

i think it is possible.

 

I would think you could replace the air flow sensor yourself, but it's not something I've ever had to mess with. You might want to do some googling.

Edit to add:
Strange. The post above (ie. #10) wasn't there when I made the comment in this post. It's always nice saving $200!

 

Sounds like the 12 volt battery is bad. A marginal battery will sometimes die after going to the dealer or a mechanic because they leave the doors open while they test it for afew hours.
The lamp in the bottom of the door cannot be turned off.
You have an obd reader do you have a volt meter? Easy to load test the 12.
With car off measure the front jump points. Write that down. With car off turn on headlights on high beam
And measure again. Write that down. Let it sit there with high beams on for 5 minutes with car off.
Measure again. Write it down.
Shut lights off and measure again in 10 minutes. That’s a pretty benign routine and a battery in good condition
Will show 12.6 volts to begin and no change with high beams on for 5 mins.
I bet yours tanks.

With that many miles and it’s probably eating a lot of oil I wouldn’t put a dime into the suspension.
You’ve been riding on the stock shocks for 12 years and they failed 9 years ago so it doesn’t seem to bother you. So what it’s leaking it’s been dead for years.

Buy a gallon of cheap 40 weight oil At Walmart and every few days before you start the car check the oil.
Keep adding oil till it’s at the full line. Keep the oil at the full line always. At 220000 miles one good low oil event and it’s new motor time.

Did you ever run the engine so low on oil it threw the red caution mark on the dash or you saw that alarm going around corners?

 

Fist thing it does when consistently running that low on oil is damage the oil scavenge ring on the bottom of the piston. Once that's worn out the engine will really start to eat oil. But its your first car and I have made the same mistakes myself. I ruined many a car just ask my folks lol.

 

So they overfilled it with oil, the oil got into the motor and threw obd2codes as it died, they fixed their mistake, you bought a new maf filter, now get it to a toyota dealer, find out if the motor is cooked, keep any paperwork, the gen2 is sensitive to overfilling the oil, harsh, but another opinion.

 

I had the exact thing same thing happen as I left Pep Boys. After an oil change, I turned my Prius on and shortly after, all the engine lights came on. I backed it out of its parking spot but the engine made some noise then stalled/stopped. After using the scan tool, we found it was engine code P3190. Long story short, during the oil change, the mechanic loosened the screws to the 90° pipe after the intake housing. This must've screwed up the amount of air coming into the engine and set off the code. Once these screws were tightened the car ran fine. We reset the codes and I've driven 20+ miles without the code coming back.

 

why would he do that?

 

Must not have had anything else to do while waiting for the oil to matriculate out.

Why not loosen some screws and see what happens.