How do you fix a PO 442 Evaporator Emission Control System Leak detected small?

Answer 1

To fix a PO 442 error code, which indicates a small leak in the Evaporative Emission Control System, start by inspecting the gas cap to ensure it is tight and in good condition, as a faulty cap is a common cause. Check for cracks or damage in the EVAP hoses and components, including the charcoal canister and associated connections. If no visible issues are found, use a smoke machine to detect leaks in the system. After repairs, clear the code with an OBD-II scanner and monitor for reoccurrence.