2003 Ford Taurus P1131

2003 FORD TAURUS
59,000 MILES • 6 CYL • 2WD • AUTOMATIC
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FUZEMAN
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Had the P1131 code scanned at AutoZone, with the definition lack of bank 1 o2 transition and explanation ECM detected a bank 1 o2 at its lean limit with probably causes [1] misfire bank1 [2] vacuum leak Bank1only [3] Fuel Injector problem bank 1 [4] engine mechanical condition.

Querstions- which is bank 1?

Already performed actions - repaired a vacuum leak on rubber connector where hose from PCV valve enters intake manifold. Replaced O2 sensor on the back exhaust manifold, the one near the firewall.

What to do next?
Dec 26, 2008 at 12:18 PM
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BMRFIXIT
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Clear codes and drive the car do u have check engine light coming back on recheck the codes


https://www.2carpros.com/forum/automotive_pictures/99387_02_V6_6.jpg

Dec 28, 2008 at 6:39 AM