Question about 2002 Mazda MPV
Posted by Anonymous on
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Posted on Jan 02, 2017
P0031 - most likely pointing to a failed O2 sensor (bank 1 sensor 1 is located before the catalytic converter)
P0421 - failed catalytic converter or a failed O2 sensor
P1512 - intake manifold shutter valve is stuck - may be caused by the O2 sensor, but may not
I recommend replacing your O2 sensor first and see what happens
Posted on Sep 18, 2009
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