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I forgot to include this in the original message but my OBD reader just reads "Error"
To be honest I have no idea what the EGR circuit is. I haven't cleaned it since I've had the car which has only been for 40k miles or so
I replaced the water pump but then it still had those issues. Do you happen to have another guess? The smoke was not coming from the exhaust....
I have a 2014 prius with about 140k miles. It has had excessive oil consumption for a while but good compression and no real issues other than...