Intermittant oxygen sensor fault - Saab 900 Bulletin Board - Saabnet.com
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Intermittant oxygen sensor fault
Posted by Jason Ochoada (more from Jason Ochoada) on Tue, 11 Feb 2003 07:29:05
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Hi everyone,
My check engine light (1993 900S)has come on a couple of times in the past month but most of the time the light is not on. The fault codes point to the oxygen sensor but when I check the oxygen sensor it is putting out the prescribed voltage and does change with engine rpm, vac leak etc. The only thing I notice that the resistance in the heater circuit of the sensor is 8 ohms and the Bentley says it should be 4 ohms. Is it possible that the sensor is failing once in a while to give a code but later when I check it is working fine?
Thanks
Jason
posted by 63.97.2...
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