![]() ![]() ![]() Your Grand Marquis’s fuel cap prevents fuel vapor from escaping the fuel tank. Here are the most common problems that will throw the code, presented in order (somewhat) from most to least likely: Fuel Cap If your Grand Marquis has warned you at all in the last few months that the fuel cap was off when it wasn’t, then replacing it would be a great first step. There are many things that can cause the P0456 trouble code to trigger in your Mercury Grand Marquis. Grand Marquis P0456 Trouble Code Causes + Diagnosis ![]() But it won’t affect the way the engine itself runs. If fuel vapor is leaking from the system, you may smell it faintly while driving your Grand Marquis. The EVAP system deals directly with fuel vapor. If there are, they may help you pinpoint where the leak is coming from. Check engine light– P0456 may be accompanied by other EVAP-related trouble codes. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |