Can someone please explain to me what exactly is going on

No the running low on oil will allow the red triangle to come on when you go around the corner kind of spirited driving like a little old lady this won't happen to The master warning light or the triangle comes on to let you know that something is wrong somewhere It is not a code light like the! The ABS and the VSC light. Scam I don't know about all the scam business everybody wants to use these words instantaneously these days but anyway point is they figured it out you were low on oil I guess nobody thought about looking or checking that because everyone's more interested in talking about the codes that you have and the related dialogue that goes with those codes. Had they just checked the engine oil in the fluids and topped up the engine oil then there you go The codes could be previously stored and the light not on that's possible and you're not going to see those codes until somebody with the capable scanner has it connected and asks the car for the codes. Some codes will be held in memory waiting for them to come back again to turn the master control light on If you haven't met the conditions then it doesn't come on. But a technician who scans the car he gets to see a little deeper than that this has been set this has been set that is not they're pending these are permanent and stored and these are active currently there's a lot of dialogue to sift through.

 

No clue on the cam sensor, but regarding the oil and the catalytic converter:

If the oil is in an older engine, the oil can be slowly burnt along with the gasoline. This produces much more pollution in the exhaust than usual. If you push all of those bonus pollutants through a catalytic converter, the catalyst will eventually lose performance. Eventually the oil volume drops low enough to go below the suction intake on the pump, which causes the pressure to drop and the dash alarm goes off.

In other words, that engine is pretty tired. It's burning oil, and the oil burning is now causing other parts to go bad in a cascading failure.

I suspect the cam sensor is just a fluke; not at all related. But I wouldn't worry about it too much, because I think you're going to need either a new engine or a new car soon, and either way it'll come with a new sensor.

It is worth knowing that the oil pressure alarm is not a 'code.' That one is a live alarm. If there isn't enough oil pressure, the indicator lights up and the beeper starts beeping. If oil pressure comes back for any reason, the beeper goes silent and the light goes off in real time.

That's because low oil pressure is an emergency condition- a thing that could kill the engine in seconds.

All the problems that get referred to as 'codes' are just that, diagnostic codes. They can usually wait for somebody to figure out what they mean, so those require a deliberate reset to clear.

 

How many miles are on the car?

Creating multiple threads (this is the 5th) for the problems with your 2008 Prius is VERY confusing and does not help with continuity for troubleshooting purposes. In two of your previous threads, you were advised to purchase a more capable scan tool so that you can read all the trouble codes, not just a few of the codes that your car has. You seem to be ignoring this advice. No one will be able to help you until you read all the trouble codes and post them in this forum.

 

Your device tells you there's no trouble codes so that means there's no lights on the dash maybe except for the tire monitor or the PO420 code for the catalyst and it doesn't matter in your state but other than that no ABS lights no master warning triangle none of that stuff correct? And what is your more capable scan tool Is it on the list here in this forum or something you just picked up because the advertisement said it would work? Just curious you don't mention what scanner you got you just say it's more capable because why? It says so on the box or.

 

What did you buy?

How many miles on your Prius?

 

FYI, the Dr Prius app is very limited with what trouble codes it can read. A better choice for a scan tool is the Autel AP200 for about $60 at Amazon.

You have still not answered my question about how many miles are on your Prius?

 

When my 2004 Prius was approaching 300k miles, I decided that the required periodic maintenance (Brakes, Suspension, tires, plugs, coolant/pumps, etc.) Greatly exceeded the value of the car so I traded it in for a 2016 Prius. It may be time for you to consider a similar decision. It is, after all, a 16 year old car.

JeffD