Prius (Gen 3) :: Check Engine Lights Up - No Error Code Detected


Feb 18, 2016

My car is a Prius Plus 2012.

One day, I decided to go to a mechanic to clean the EGR pipe. Only the pipe, not the whole EGR. It was an extremely simple operation a mechanical one, not electrical etc. Starting from that day, when I go with the car, from time to time, check engine lights up. For a fraction of a second to up to 2 seconds then it disappear.

The car behave itself without a problem. But still the on-off check engine is really annoying.

So a went to the dealer. Put the car on tester.

Result: no code error !

I went to another garage , put another tester on the car, no error..

How can I actually see what the error is if nothing is stocked in the ECU of the car?

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