Help! P3190 & Limp Mode after Air filter check & oil chg

That snorkel has spring tensioned clip holding it to the throttle body. If it's missing, it might be directly below, or rattling around atop the engine underpanel. If it's missing, believe it's item #14 here:

Air Intake for 2010 Toyota Prius | McGeorge Toyota Parts

 

I'm curious as to why you needed a head gasket job? Did you overheat the car or some other issue occur? Glad you got the code issues sorted out.
I found that on my 2008 that the snorkel tube going to the throttle body it was also not held on very strongly.. there is a clamp but it's easy to pull off even if it is clamped.

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You are NOT stupid! Dumb, yes. But we all have made mistakes like this before.
Dumb is you don't know. We are all dumb on many things.
Stupid is you KNOW, but you do it anyway! That's STUPID!!!!
I am glad you figured it out and it was a simple mistake.

It's best to go slowly and always check your work. And if you do some work and afterward you have a problem,
then check everything and find what you disconnected, or if something came off.

Things like this happen to the best of us, so don't feel bad about it.
But I bet it won't happen again!

 

I for some reason I missed that this was a third gen. I'm surprised it didn't throw in a mediate check engine light when the pump stopped? Or was it perhaps a leak.
One of the things I love about the app.
hybrid assistant. Is that it gives you some temperature outputs from engine, inverter, and MG2.
If anything is outside of its normal range they turn red. You might consider looking into that app. It also has the ability to override the factory settings on the cooling fan for the battery. And you can set criteria for the fan to come on at a lower temperature. This is extremely helpful if you live in a very hot climate. It also helps warm up a battery in extreme cold. Because it will turn the fan on to a low setting to bring in warm cabin air to get the battery temperature up quicker.


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You could use one of these till you get the proper clamp:



The Toyota clamp has a tricky mechanism, so you can lock it in the expanded, loose mode. You pinch the tangs with pliers, then kinda wiggle it into the locked position. Get the clamp positioned properly, then release it from the locked position, and it'll clamp tight. I never find it easy, various types of pliers are worth trying. I find a somewhat wider tipped pair of pliers easier to work with, hard to explain.

 

That’s the exact hose I was talking about

 

Usually what I do is watch 5 or 6 videos from youtube. Each one is different. Some are really worthless!
But I've found each one has something the other doesn't. So you can learn any tricks.
After you watch them a few times, you feel you know how to do it.
It makes it easier to do.

 

The first time I cleaned the oily goo from under the TB on my Prius, I forgot to plug the TB back in. The engine doesn’t idle fast enough to keep the battery charged when you are driving. It took the second time of going into limp mode for me to realize the ICE wasn’t revving when I pushed on the pedal.

 

^ That's a pretty disastrous situation. Firstly because completely unfiltered air has free access to the throttle body, and the gritty plumbing directly above is going to rattle some dirt in as well. Also, the Mass Air Flow Sensor is cutting checks it can't cover.

 

For anyone searching, I had the "Check Hybrid System" message after replacing my air filter, I re-seated all the hoses, still no luck. Then I dug the old filter out of the trash and reinstalled that, everything was fine. Turns out my Prius did not like the ACDELCO A3686C air filter that I bought for $9.99 on RockAuto.

 

Perhaps the delco one was too restrictive?

 

Did you read the trouble code when you got the "Check Hybrid System" message? If so, can you please tell us what it was.

Did you purchase a different air filter that worked without triggering a trouble code?

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