96 Mustang Gt / 4.6 /Auto Trans. Any Help.. Thank You
Ford Q&AAsk Your Question
1996 Ford Mustang GT Question: Code-PO133/O2 Circuit Slow Response(bank 1,Sensor 1)
Answer #1csubak30 January 04, 2013, 08:32Master
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 #2Greg's Orange Auto (15380 Answers) , Orange, CA - (714) 361-9386globalhelper January 04, 2013, 09:13Master
agree with bak as you may have to manually test o2 to determine malfunction
Answer #3Prestige Auto Works (218 Answers) , Sacramento, CA - (916) 550-9579Prestige Auto Works January 04, 2013, 11:32Journeyman
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.