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post #4 of (permalink) Old 12th December 2013
lancs dave
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Re: Engine management light on after front brake discs replaced

Bank1 sensor 2 is the rear sensor after the cat convertor.

It could be the sensor or wiring.
It could be because the cat is failing.
It could be because the car was running rough for a while and the emmissions were out of spec.

Lot's of could be's so don't just throw a new sensor in there.

If the light has gone off and the car runs ok, I wouldn't worry until it comes on again.
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