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Re: Check Engine Light - O2 Sensor? 200 1989

posted by  someone claiming to be chris herbst on  Thu Nov 23 16:43 CST 2000 [RELATED]

Yeah, you're getting the rich or lean at speed or something to that effect.

I've gotten those codes before, but ultimately fixed them by cleaning up the connection to the O2 sensor wire on the firewall, then resetting the codes. The same thing goes for the mass airflow sensor, which will throw a 1-2-1, I think. I cleaned that one up yesterday and reset it. We'll see what happens.

You can test the O2 sensor function, but first try cleaning and resetting the connection and find out what happens there. If it writes a code again, then go farther.





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