Chrysler Pacifica check engine light and gas cap issue with recurring code P0456 possibly related to fuel pump connection on Chrysler Pacifica

Some Chrysler Pacifica owners report experiencing issues related to the P0456 trouble code, which indicates a small leak in the evaporative emissions system. This code typically results in a check engine light and may be accompanied by a gas smell near the fuel tank or filler tube. While some owners have resolved the issue by replacing the gas cap, it's important to note that the Chrysler Pacifica does not utilize a traditional gas cap. Additionally, technicians have identified pinhole leaks near the fuel pump locking rings that may require significant repairs, such as replacing the fuel tank. Although driving with the P0456 code is generally considered safe, it may lead to reduced fuel economy and intermittent check engine light activation. Addressing these concerns promptly is crucial for maintaining the integrity of the vehicle's emissions system.