TSB - CANISTER CLOSE VALVE (CCV) REPLACEMENT - This bulletin provides the procedure to replace the Canister Close Valve (CCV) on some 2012-2017MY Rio (UB) vehicles, produced from June 21, 2011 through March 28, 2016, which may exhibit the engine warning lamp DTCs P0455 and P0456 for an evaporative emission system leak due to the Canister Close Valve (CCV) stuck open.
