DTC P0457-76: EVAP System Leak Detected (fuel cap loose/off) - Wrong mounting position: Action

NOTE:

If purge valve related DTCs are also set, perform the relevant corrective action(s) first.
It is not possible to replicate the failure event as certain entry conditions must be satisfied (for more information, refer to EVAPORATIVE EMISSIONS - V6 S/C 3.0L PETROL

Refer to the relevant section of the service information and check the evaporative emissions system for leaks. For additional information, refer to: EVAPORATIVE EMISSIONS - V6 S/C 3.0L PETROL