97 ford taurus faulty o3 sensor readings

United States
May 8, 2008 10:03am CST
I have replaced all the o2 sensers the catalytic converter and one fuel filter and the code still says the o2 senser is bad what else could be causing this code to trigger the check engine light to come on?
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1 response
kykidd
@kykidd (6812)
• United States
8 May 08
The EGR valve can also cause this. Are you have any problems with the way the car runs? If not, you might run through all of the sensors and look for some type of leak. If fluid gets on a sensor, believe it or not, that can cause the light to come on too.