An oxygen sensor will not cause that-although it will eat a lot of gas because its not functioning right. Tell them to try again
If the sensor dies altogether, the result can be a fixed, rich fuel mixture. Default on most fuel injected applications is mid-range after three minutes. This causes a big jump in fuel consumption as well as emissions. And if the converter overheats because of the rich mixture, it may suffer damage.
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Monday, December 31st, 2007 AT 1:29 AM