When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
The service engine soon light has illuminated, went to advance auto parts and got them to read the code. The code that came up was P0401 (exhaust gas recirculation flow insufficient detected) , what could it be that I can check/replace.