the diagnostic code isp0401
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2001 Honda Odyssey Question: how can i pass inspection?
Answer #1big brad March 23, 2013, 10:41Technician
you may have a clogged egr port but usually its egr control solenoid first take vacuum line off egr and use a vacuum pump hook it to egr and apply vacuum car should sputter or shut off . that means egr valve is working properly .then Iwould go with soelnoid