Dodge Dakota yellow vehicle warning light related to EVAP issue with gas cap replacement attempted on Dodge Dakota

Some Dodge Dakota owners report experiencing persistent yellow vehicle warning lights related to EVAP issues even after replacing the gas cap. These owners may encounter trouble codes like P0440, which indicates a "very small evap leak" that could stem from not just the gas cap but also pinhole leaks in the system. Additionally, the warning light may remain illuminated due to leaks in other components such as hoses, purge valves, charcoal canisters, or the leak detection pump. Problems with the EVAP vent valve, filler hose, or other parts of the EVAP system may also trigger the warning light. Some owners find that age and wear and tear contribute to EVAP system malfunctions beyond just the gas cap. If the warning light persists, it is recommended to inspect and potentially replace other components of the EVAP system to effectively address the underlying issue.