Tank system, test result = "Minor leakage found"

Diagnostic trouble code limit: Estimated leakage = 0.40 mm

Check that the tank cap is properly fitted and that its seal is undamaged.
Check the hoses and connections on the leak diagnostic unit, the canister, EVAP-valve and the fuel filler pipe visually. Check for damage or incorrect/loose installation.
Remedy as necessary.
Restart the test.
NOTE:
Problems caused by a loose tank cap or loose hose connections may be difficult to find. If no leakage was found in the quick-test of the tank system after completed checks and actions according to the above, the problem has likely been repaired.

NOTE:
By blocking the hose between canister and EVAP-valve and then repeating quick-test tank system, leakage through the EVAP-valve can be detected. If leakage was detected in a previous quick test of the fuel tank system but is not now detected when the hose between the canister and the EVAP valve is blocked, the leakage may be through the EVAP valve.
Disconnect the hose between the EVAP canister purge valve and the EVAP canister from the connection to the EVAP canister purge valve.
Block the hose while running the quick test of the fuel tank system.