I have a 2001 mitsubishi eclipse 4cyl 86000mi my check engine light doesnt stay off. the code is PO403. ive cleared the code and went to get it fixed but after a couple of mins being on the light returns. how do i fix the problem?
P0403 Exhaust gas recirculation circuit malfunction.
The EGR valve is not happy.
This may require a new EGR valve.
I would try fuel injector cleaner first.
Put a full bottle in 1/3 tank of gas a give it a good run....could be a piece of carbon holding the valve out of position.
Does it idle ok?
A rougher than normal or faster than normal idle speed could be a stuck valve.
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