This bulletin provides the procedure to update the software logic of the Engine Control Module (ECM) system on some 2022MY Carnival (KA4) vehicles produced from January 4, 2021 through January 12, 2022, which may exhibit an MIL 'ON' with DTC P0456. Follow the procedure outlined in this publication to apply the improved logic to the 'ECM' system using the KDS ECU Upgrade function as described in this bulletin.
