this is a 2003 Ford Explorer
2007-05-09 16:30:13 · 6 answers · asked by QM 1 in Cars & Transportation ➔ Maintenance & Repairs
Bank #2 catalytic converter is not operating within specification. It means your bank #2 downstream O2 sensor is switching at close to the same rate as bank #2 upstream. This is the PCM's way of detecting bank #2's catalyst operating efficiency. Bank #2 is the OPPOSITE bank where cylinder #1 is. This means Bank #2 is the DRIVER side bank on your particular vehicle.
2007-05-09 16:39:30 · answer #1 · answered by Ford Goddess 6 · 0⤊ 1⤋
During warm up the second o2 sensor detected a weak cat converter. A word of caution here. Each manufacture of car is different some cars with a very small exhaust leak can cause the same code. Bank #2 is the side where #2 cyl is so be careful you don't work on the wrong side. I have also seen weak o2 sensors cause this code. Some Manufactures have computer reprograms to address cat converter warm up issues.
2007-05-09 16:38:30 · answer #2 · answered by John Paul 7 · 1⤊ 1⤋
This code means you need a new CAT. Have seen this problem on multiple vehicles. Do not replace your 02 sensor. This will not fix the problem. Take your vehicle to a muffler shop and they can fix the problem.
2007-05-09 17:18:00 · answer #3 · answered by Anonymous · 1⤊ 0⤋
The secondary o2 sensor are cat monitors. Their sole function is to monitor catalyst efficiency. They will indeed set codes for a bad cat. They can also be defective, and set codes for no reason.
2007-05-09 17:04:46 · answer #4 · answered by Anonymous · 0⤊ 1⤋
F ix
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R epair ,
D aily.
the catalytic is frog top. and is not a Ford, the computer is saying is an after market
Koreans ,any ones?
2007-05-09 17:18:11 · answer #5 · answered by Anonymous · 1⤊ 0⤋
Usually means that one or more of the 02 sensors are not working
2007-05-09 16:34:22 · answer #6 · answered by the bear facts 5 · 0⤊ 2⤋