P0455 1997 Ford F150 - Check engine light on

Question

While driving the check engine light came one (first time). Don't know why, only thing I can recall after reading the various causes for the P0455 us I replaced the gas cap with a key-gas cap. Please help in determine corrective action.

Answer 1

P0455 Gross leak detected

Try another fuel cap in its place. majority of time it is the fuel cap being at fault