1998 Buick Century Q&A

1998 Buick Century Question: diagnostic code p0401 egr flow insufficent ?

diagnostic code p0401 egr flow insufficient making check engine light come on . what is the cause. -
Answer 1
usually a clogged vaccuum port in throttle body. if they are clear, the valve may be bad. have it checked to verify. Roy -
Comment 1
THANK YOU I WILL CHECK THAT. -