| Re: high fuel consumption..?
The code does not say to replace the sensor, it only tells you it has an Oxy sensor circuit fault. This code can be set by an engine running too cool, never getting into closed loop. It will set a rich condition Oxy sensor code when in fact, theres nothing wrong with the sensor and all it needs is a $10.00 thermostat. And running too cool will lower fuel mileage. The Oxy sensor can be monitored thru on board diagnostics to verify it swings correctly from rich to lean. You can also verify engine temp in celcius thru the same diagnostics. Should be 95 degrees C in about 10 min of driving. Hows the air filter? is the timing set to spec?
Last edited by carnut; 11-07-09 at 12:42 AM.
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