I looked it up and it says something about an EVAP leak, what is the most likely source of the problem?
2007-12-18 10:49:13 · 4 answers · asked by The Skizzanator 2 in Cars & Transportation ➔ Car Makes ➔ Ford
Call a mustang dealer and they'll be able to answer your question.
Good luck.
2007-12-18 11:20:49 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Not all vehicles will have the P0457 and P1443 tests or the Check Fuel Cap light implemented. These
vehicles will continue to generate only a P0455. After the customer properly secures the fuel cap, the P0457,
Check Fuel Cap and/or MIL will be cleared as soon as normal purging vacuum exceeds the P0457 vacuum level
stored in KAM.
2007-12-18 19:50:59 · answer #2 · answered by Fordman 7 · 0⤊ 0⤋
Gross Vaccum leak....
basically system tried to pull a vacuum and hold it... It didn't hold the vacuum and failed the test.
Most likely suspects... gas caps (especially if it isn't a Ford OEM part) and a part called the canister vent valve (valve that makes it hold the vacuum)
2007-12-18 21:20:23 · answer #3 · answered by gearbox 7 · 0⤊ 0⤋
Believe it or not, the most likely cause is a loose or leaking gas cap.
2007-12-18 19:42:50 · answer #4 · answered by amateurmechanic 2 · 0⤊ 0⤋