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2008 Lexus LS600h L – Check Engine Light With P0546
CUSTOMER CONCERN The check-engine light is on with DTCs P0546 and P1081 stored. CAUSE Circuit testing confirmed an open Bank 1 Sensor 1 exhaust-temperature sensor. The exhaust flap valve moved freely and operated as designed. CORRECTION Remove and replace the failed Bank 1 Sensor 1 exhaust-temperature sensor.
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