check engine light on - Ford Mustang Forum
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post #1 of 2 (permalink) Old 11-15-2011 Thread Starter
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check engine light on

i recently purchased an 02 gt and the service light came on, the car has no cats on it, but it does have bank 1 and 2 O2 sensors plugged in the exhaust. Could the light be on because the 2nd O2 sensor is not monitoring the first bank? I have not had a chance to plug the car to a scan tool and see if they're are other faults in the pcm.

i did read that you can put a tune on the car and it will by-pass the cats? to where the check engine light goes off?

i hear a lot of different things, so if anyone has had this issue please let me know what you did to correct this issue. Thanks

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post #2 of 2 (permalink) Old 11-15-2011
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You need a set of MIL eliminators plugged in to the rear O2 sensors to keep that check engine light turned off. They're about $50, do a web search and pick out a set. They take about 30 minutes to install.

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check engine light , exhaust , o2 sensor

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