P0443 - Evap Purge Solenoid Circuit P0452 - Evap Pressure Switch Stuck Closed P0455 - Evap Purge System Large Leak P0456 - Evap Purge System Small Leak P0457 - Loose Fuel Cap P0461 - Fuel Level Sensor 1 Performance P0462 - Fuel Level Sensor 1 Circuit Low ...
OBD II can detect fuel vapor leaks (evaporative emissions) in the charcoal canister, evap plumbing or fuel tank by pressurizing or pulling a vacuum on the fuel system. If the gas cap is loose or missing, it will detect it, set a code and turn on the Check Engine Light....