Question

1999 Ford Explorer Limited V6 SOHC 4WD with code P0455, check engine light comes on

Answer 1

Hi there,

This code is for a large evap leak. The evap system is what prevents the fuel vapors from leaking into the atmosphere. This code usually means there is a problem with the gas cap or a problem with the vent control valve. Normally it's best to try a cap first, then if the code returns have the vehicle smoke tested for leaks.

Answer 2

P0455 FORD - Evaporative Emission Control System Leak Detected Gross Leak

Read more: https://www.autocodes.com/p0455_ford.html