Some 2010-2015 Toyota Prius (22ZR-FXE equipped) vehicles, 2012-2015 Prius PHV vehicles and 2012-2016 Prius V (22ZR-FXE equipped) vehicles may exhibit a “runs rough” and/or MIL on condition with DTCs P0300, P0301, P0302, P0303 and P0304 (misfire) during light acceleration while the EGR system is active. Replace the intake manifold assembly to address this concern. Use the revised intake manifold assembly P/N 17120-37054 to replace the original assembly.