1999 Ford Taurus 02 sensor

1999 FORD TAURUS
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1999 Ford Taurus 6 cyl Automatic 141000 miles

my check engine light stays on , on my 1999 ford taurus se wagon . I tested it with a scanner and it said it is the code P0156 ( sensor circuit malfunction) bank 2 , sensor 2, downstream heated 02 sensor fault bank2. I bought the sensor but need to know what side to install it on. Is it on the back driver or back passenger side? Or would I have to replace both back sensors . I know there are 4 sensors in all. Are there any pictures for it anywhere? Thanks soo much
Mar 31, 2009 at 8:04 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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