which one? Your vehicle has four total. Two upstream, two downstream.
Po171 Bank 1 system to lean P2195 Oxygen sensor signal Baised/stuck lean Bank 1 sensor 1
A P0171 is a lean code, usually from a vacuum leak, this will then trigger the P2195. Check all your rubber hoses for cracks and splits. WIth the engine on, you can move things around and if the idle changes or you hear hissing, then you found it. Sometime you have to perform a smoke test to find the pesky leaks.
How likely is the problem a faulty sensor, rather than the catalytic converter. First time this late has ever come on (190k miles)
2005 Mazda Tribute s 4WD
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Maintenance & Repair
2006 Mazda Tribute
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Maintenance & Repair
I have a 2003 Mazda Tribute V6 4wd. My engine light has been on for several months but vehicle ran fine. I check it out when it started to miss out. I first received a P0306 cylinder 6 misfire. ...
2003 Mazda Tribute LX V6 4WD
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Maintenance & Repair
o2 sensor
2008 Mazda Tribute i Sport
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Maintenance & Repair
2001 Mazda Tribute LX V6 4WD
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Maintenance & Repair
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