hi we have a mazda mpv 2004 the code in the computer is p0421 we like know about and where is located this part
Apr 9, 2010 at 2:35 AM
2004 Mazda MPV code
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Means catalyst system efficiency below threshold.
Worn and deterated CAT , exhaust leak before CAT also need to verify O2 operation is normal range.
Worn and deterated CAT , exhaust leak before CAT also need to verify O2 operation is normal range.
Apr 9, 2010 at 3:11 AM
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