Lincoln MKC check engine light issue after purge pump replacement on Lincoln MKC

Some Lincoln MKC owners report experiencing a check engine light issue following the replacement of the purge pump, often attributed to a bad purge valve or a crimped EVAP line from the fuel tank. These owners are advised to ensure that the gas cap is securely tightened, as a loose gas cap can trigger the light. To resolve the check engine light, it is recommended to pull the trouble code, fix the underlying issue, and drive the vehicle until the module recognizes the problem has been resolved. Additionally, some owners find that the check engine light may indicate various issues beyond the emission system, such as ignition system problems or engine timing issues, highlighting the importance of a comprehensive diagnostic approach.