Mechanics

ECM DIAGNOSTIC???!?!?

1995 Mazda b2300

Computer problem
1995 Mazda b2300 4 cyl Two Wheel Drive Manual 196000 miles

I just recently ran an obd computer diagnostic and my truck had an issue (Catalyst Efficiency Below Threshold Bank1) and I was wodering how can I fix this issue or what advice I can get?
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N306m
May 3, 2010.



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