The Check Engine Light may illuminate because a component of the oxygen sensor stops working. As a result the engine computer is unable to determine the proper ratio of air to fuel for the engine. Replacing the failed oxygen sensor should correct this concern.
Check Engine Light Due to Failed Oxygen Sensor on Lexus LX470
3 people reported this problem
Verified for the Lexus LX4706 reports
1 answerDecember 18, 2014
Verified for the Lexus LX4708 reports
Verified for the Lexus LX4703 reports
1 answerJanuary 30, 2011