2010 prius egr code

can you ask for the code and post it here?

 

So you know how disconnecting the 12v will reset codes, thats what you could have done and plug the egr back before reconnecting 12v.

Wait like 5 minutes while 12v is disconnected.

No tow needed

 

you haven't damaged anything, but you do need to get a prius aware scanner, or take it someplace that has one for the correct trouble codes

 

You shouldn't really do that. I know people here tell you to do it. But if you don't understand why
you are doing it, then it's likely not a good idea.
If you disconnect the 12v battery for 30 minutes or so, it should clear the codes and you can drive it.
ANYTIME you get a code, it is wise to read the code, It will help diagnose what the issue is.

 

Codes are just a suggestion everyone.

 

You write the topic "2010 prius egr code", but you have not read any codes. Why EGR?
There could be a hundred and fifty reasons. Bad fuel causes misfires, bad air mixture causes misfires, etc.
So was there a code or not and how did you read it?

 

What’s the miles?

 

There are two different trouble codes that could be triggered by the EGR system. They are P0401 and P0403. The troubleshooting process is different depending on which code you had. That is the reason people are asking what for the actual code.

 

you could buy a code reader for not much money, but get the right one.

 

2010-2015-toyota-prius-p0102

 

Assuming your scanner read the code (P0102) correctly—usually an ok assumption because codes are transmitted in a very simple form that's hard for a scanner to get wrong—then the real problem with the scanner is just that its built-in code-description list is all messed up, because a P0102 code has nothing to do with EGR.

P0102 is a code about a low signal input from the mass-airflow (MAF) sensor. That's located up near the top of the engine where the airbox is ducted to the throttle body.

Because all codes in the P0 range are standardized industry-wide, P0102 is always an airflow sensor code in any car anywhere. It's not like the manufacturer-defined P1 codes that might mean different things in different cars. So a scan tool that says anything about EGR for a P0102 code is not even like sorta wrong or sometimes wrong or a little wrong, it's just plain always wrong. But at least it told you the code, so that gives you something to go on, once you find a better source to look up what it means.

Toyota Service Information and Where To Find It | PriusChat

 

Verify the maf sensor on the air intake is plugged in.

The egr is not your problem regardless if it's plugged in or not. A normal engine will run either way. The worse an egr can do to engine performance is to stick open. That can cause a rough idle and sometimes a hard start. If you unplugged it while it was open it would stay open - not good. However most will unplug it with the engine off which should be when the egr is closed.

I would plug it in and make sure all hoses are connected and nothing is loose or leaking air near the egr or anywhere.

I suspect you have another issue and it is not your hybrid battery or egr.

This sounds like a clogged catalytic converter.

The transaxle is not slipping, it is changing to a lower ratio, kind of like going to low gear, in order to get up the hill with significantly reduced engine power. Again sounds like a clogged catalytic converter.

I am guessing the engine burned oil (used oil) before it bent the rod. Oil burning will clog a cat.

Start by verifying the maf sensor, egr and everything else is connected.