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.

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1 answer
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