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.Google+
Car Problem Reports
Lexus ES300 Check Engine Light Due to Failed Oxygen Sensor Component
Lexus ES300 Problem
Average Mileage: 148,793 mi (16,584 mi - 283,700 mi)
Visitor, 1995 Lexus ES300, 160,000 mi
Check Engine Light due to oxygen sensor 1, bank 1. Ordered original factory part for $180 and replaced it in 30 min.
Visitor, 1993 Lexus ES300, 160,000 mi
burning n smelling of fuel n oxegine lot of smoke n car is cutting out when idling
Visitor, 1997 Lexus ES300, 90,000 mi
Light came on, brought to mechanic and was put on diagnostic machine, cost $95 was told it needs a new gas cap $35 and the next same the light came back on. Has been on mostly, sometimes goes off, but rarely
Visitor, 1994 Lexus ES300, 248,000 mi
Check Engine Light on
was dignosed as bad ox sensor. Car has three of them. Changed the one at exhaust manifold. Solved problem.
CEL from rear O2 sensor. Replaced sensor, canceled code, problem fixed. NOTE. almost any CEL on the 2000 300ES will be accompanied by a "traction control off" light. That is a design feature to protect the traction control system. One the 0-2 sensor is replaced and codes canceled, traction control light will go out as well.
Visitor, 1998 Lexus ES300, 160,000 mi
check engine line on due to failure of one of threee oxygen sensors.
Visitor, 2000 Lexus ES300, 125,000 mi
Purchased new O2 Sensor but old one is seized on and cannot remove it. Have tried EVERYTHING!
Visitor, 1997 Lexus ES300, 188,000 mi
check engine light for oxygen sensor. I don't know exactly how to fix it
Visitor, 1996 Lexus ES300
1996 Honda Accord Ex need to pass smog engine light on on get a P0141 code diagnostic mode 3