Mending Lexus misfire

This bulletin applies to 2016-2017 Lexus GS200T, IS200T and RC200T; 2018-2019 GS300; 2018-2024 IS300/RC300; 2015-2017 NX200T and 2018-2021 NX300 vehicles.

Mike Mavrigian

Related To:

Mitchell 1

Sept. 9, 2025

Some vehicles may also enter limp mode, and the MID (multi-informational display) will display the 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.

This bulletin applies to 2016-2017 Lexus GS200T, IS200T and RC200T; 2018-2019 GS300; 2018-2024 IS300/RC300; 2015-2017 NX200T and 2018-2021 NX300 vehicles.

Vehicles equipped with an 8AR-FTS engine may exhibit a MIL on with one or more of the following DTCs:

- Cylinder misfire: P030000, P03027, P030085, P030100, P030200, P030300 or P030400.

- Air-fuel ratio imbalance: P11EA00, P11EC00, P11ED00, P11EE00, P11EF00, P219A00, P219C00, P219D00, P219E00 or P219F00.

Some vehicles may also enter limp mode, and the MID (multi-informational display) will display the 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.

About the Author

Mike Mavrigian

Motor Age Editor

Mike Mavrigian has written thousands of automotive technical magazine articles involving a variety of specialties, from engine building to wheel alignment, and has authored more than a dozen books that crisscross the automotive spectrum. Mike operates Birchwood Automotive, an Ohio shop that builds custom engines and performs vintage vehicle restorations. The shop also features a professional photo studio to document projects and to create images for articles and books.