Question about Mazda MAZDA3
P2196 should be set for California emission vehicle only. It is telling you that the front oxygen sensor (in exhaust manifold) is stuck rich. This would be that either your engine is truly running too rich (too much fuel compared to air) or the sensor is malfunctioning and needs to be replaced.
Posted on May 25, 2011
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Posted on Jan 02, 2017
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