scottu5 Posted February 24, 2022 Share Posted February 24, 2022 Hello, New to this forum and would appreciate any help or advice. The car is a 2008 SC430 with around 62k miles (doesn't get driven much). Been working well till today. Riding very rough (like a flat spot on a tire or a flat). Can feel the roughness immediately and it gets worse with speed. If you lift off the throttle, slight worse, apply power, slight better. VSC OFF Light is on and flashing, VSC symbol light is on and MIL is on (steady). Codes are; P0300, P0102 & P0113. Any suggestions where to start or ideas what this is? Thank you, scott Quote Link to comment Share on other sites More sharing options...
RX400h Posted February 24, 2022 Share Posted February 24, 2022 P0300 LEXUS code possible causes Faulty spark plug (s) Faulty ignition coil (s) Clogged or faulty fuel injector (s) Intake air leak Fuel injectors harness is open or shorted Fuel Injectors circuit poor electrical connection Ignition coils harness is open or shorted Ignition coils circuit poor electrical connection Insufficient cylinders compression Incorrect fuel pressure P0102 LEXUS code possible causes Faulty mass air flow sensor Intake air leaks Dirty mass air flow sensor Dirty mass air filter Mass air flow sensor harness is open or shorted Mass air flow sensor circuit poor electrical connection P0113 LEXUS code possible causes Faulty Intake Air Temperature (IAT) sensor Dirty air filter Intake Air Temperature (IAT) sensor harness is open or shorted Intake Air Temperature (IAT) sensor circuit poor electrical connection Quote Link to comment Share on other sites More sharing options...
scottu5 Posted February 24, 2022 Author Share Posted February 24, 2022 Thank you sir. scott Quote Link to comment Share on other sites More sharing options...
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