Buick Encore system light on with code P0449 due to faulty wire harness under fuel tank on Buick Encore

Some Buick Encore owners report experiencing issues when the service engine light activates due to the P0449 trouble code, which is often linked to a faulty wire harness under the fuel tank. This problem indicates a malfunction in the EVAP vent solenoid control circuit. Owners are advised to visually inspect the wiring harness and connectors for any damage, including broken, bent, pushed out, or corroded connector pins. Prompt resolution of this issue is essential to avoid further complications with the emissions system and to ensure the vehicle passes inspections.