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p1131 code on a 2002 ford taurus

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Jun 28, 2010, 10:05 AM

Post #1 of 2 (6742 views)
p1131 code on a 2002 ford taurus Sign In

I have a 2002 Ford Taurus se 3.0 v6 92k miles code p1131 lack of bank 1 o2 transitions lean explanation is that a faulty o2 censor for sure? If it is how do I know for sure which one to replace? Thank you

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Jun 30, 2010, 9:42 PM

Post #2 of 2 (6727 views)
Re: p1131 code on a 2002 ford taurus Sign In

That is a lean code for bank 1 sensor 1. The code doesn't mean the sensor is bad, it means it's not switching and it's staying lean.
The 1st thing to do would be to test the sensor to see if it's capable of switching and in the correct amount of time.

Depending on the results would determine where you go next........

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