L-SB-0007-21

TSB: Some 2015 ? 2017 model year NX 200t, 2016 ? 2017 model year GS 200t, IS 200t, and RC 200t, 2018 ? 2019 model year GS 300, and 2018 ? 2020 model year IS 300, NX 300, and RC 300 vehicles equipped with an 8AR-FTS engine may exhibit a MIL ON condition with one or more of the following Diagnostic Trouble Codes (DTCs): ?Cylinder Misfire ? P030000, P030027, P030085, P030100, P030200, P030300, P030400. ?Air-Fuel Ratio Imbalance ? P11EA00, P11EC00, P11ED00, P11EE00, P11EF00, P219A00, P219C00, P219D00, P219E00, P219F00. Some vehicles may also enter limp mode, and the Multi-Informational Display (MID) will display the following message: ?reduced engine power ? take vehicle to nearest dealer.? This may be caused by cylinder compression pressure drop due to improper exhaust valve sealing from worn valve guides. Follow the Repair Procedure in this bulletin to address this condition.