Posted by Mark McgrathMark McGrath
on July 12, 2010, 9:44 pm, in reply to "citroen c3 1.4 sagem S2000 system. code po420 cat aged / efficiency"
good quality cat ? even type approved cats are throwing this code on certain cars
enter p0420 in the search box on this forum and a lot will be revealed
maybe even need a software update ?
