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Cleared OBDII code; no recurrence. Is this OK? 850 1996

posted by  Bill Houghton on  Sat Jan 15 05:16 CST 2005
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last visit: Sat Jun 7 19:06 CST 2014
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In December, while I was on the freeway returning from my mother's house, the "check engine" light flashed on. I bought a scan tool, which told me the problem was "P0133, O2 sensor circuit slow response, Bank 1, Sensor 1."

I take it that there are two oxygen sensors, one in front and one behind the catalytic convertor, and that this is probably signaling a problem with the front sensor.

I tried clearing the code about a week ago, and the "check engine" light has stayed off in daily driving in a mixture of city and freeway driving. I'm thinking that:

1. The problem was a transient one and hasn't recurred, or the light would have come on.
2. The problem is a sign that the sensor is on its way out, but not yet dead (and I might be able to get through until better weather, since I don't have a garage).

Am I understanding how this system works?






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