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check engine light codes for o2sensor. If I empty tank, light goes out for a day on 1996 Lexus LX450

But comes back on after 2 or 3 engine cranks.

Asked by for the 1996 Lexus LX450
THE O2 SENSOR CAN BE BAD FOR SEVERAL ISSUES. COULD BE THE HEATER CIRCUIT, OR AN UPSTREAM ISSUE CAUSING THE LIGHT NOT NECESSARLY THE 02 SENSOR
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THE O2 SENSOR CAN BE BAD FOR SEVERAL ISSUES. COULD BE THE HEATER CIRCUIT, OR AN UPSTREAM ISSUE CAUSING THE LIGHT NOT NECESSARLY THE 02 SENSOR