Lexus LS460 check engine light on with acceleration limited to 20 mph on Lexus LS460

Some Lexus LS460 owners report experiencing issues such as a check engine light activation accompanied by limited acceleration to 20 mph, indicating a significant problem that requires immediate attention. These problems may stem from a faulty emissions system component, sensor, or catalytic converter triggering the warning light. Additionally, issues with the ignition cylinder or exhaust gas oxygen sensor can lead to irregular engine performance and restricted acceleration. If the check engine light is flashing, owners are advised to turn off the engine immediately to prevent potential motor damage. Other causes may include a loose gas cap, defective catalytic converter, or problems related to the onboard diagnostics system, such as a bad VVT solenoid, spark plugs, or transmission issues. It is recommended that owners have their Lexus LS460 inspected by a qualified mechanic to diagnose the underlying issue, as ignoring these warning signs could result in further vehicle damage.