Code-PO133/O2 Circuit Slow Response(bank 1,Sensor 1) on 1996 Ford Mustang GT

96 Mustang Gt / 4.6 /Auto Trans. Any Help.. Thank You

by in Selma, CA on January 03, 2013
3 answers
ANSWER by on January 04, 2013
Due to age of vehicle, most likely cause is the o2 sensor itself is faulty and needs replaced. It will be the front bank 1 sensor. Follow bank 1 exhaust manifold to about the y-pipe location the faulty sensor should be there. 1st sensor you run into is sensor 1. Only other possibility is the MAF sensor is not operating properly.
ANSWER by on January 04, 2013
agree with bak as you may have to manually test o2 to determine malfunction
ANSWER by on January 04, 2013
If it is your faulty oxygen sensor for bank 1, sensor 1. This would be on the cylinder #1 side of engine, which should be the passenger/right side for this car. Sensor one is the front sensor before the catalytic converter. I would make sure that the Mustang is running smoothly before you assume your oxygen sensor is bad. You could also have an exhaust leak, fuel injection problem, faulty MAF sensor or an air leak in the system. You may experience a bit of rough running with some of these other faults.

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