P0420 Code Ford Focus. Web after 2 years ownership i got a p0420 fault code. Clear the codes, road test and if the same code.
Web there was a p0420 code on it when i purchased it. I researched to the best of my (limited) ability and then rung my ford dealer, who went straight for cat replacement. Web saying that a faulty canister purge valve can't cause a p0420 is false.
Fortunately, even though the code sounds. I'm guessing the previous owner had a cobb access port installed with a custom tune but the ap didn't come with. Web after 2 years ownership i got a p0420 fault code.
Web code read as p0420. Web ford focus club p0420 code p0420 code by sctieco, may 3, 2020 in ford focus club share followers 0 reply to this topic start new topic sctieco budding. If your engine isn’t working as well as it used to, the p0420 code may be to blame.
Web the p0420 code signals a low catalyst system efficiency. Web p0420 is a cat efficiency code only, it would not be caused by a bad sensor you would have other p01xx codes. Web saying that a faulty canister purge valve can't cause a p0420 is false.
Web 882 117k views 2 years ago ford fix code p0420 catalyst system efficiency any ford if you have ford, your engine light is on and you have code. Clear the codes, road test and if the same code. This code suggests that the oxygen levels are below the desired threshold (bank 1), which most often results from.
I researched to the best of my (limited) ability and then rung my ford dealer, who went straight for cat replacement. Web diagnostic trouble code (dtc) p0420 stands for “p0420 catalyst system efficiency below threshold (bank 1).” it indicates that the exhaust system’s oxygen. Web there was a p0420 code on it when i purchased it.
