0/2 sensors on 2002 Ford Explorer Sport Trac

check engine came on code said 0/2 sensors changed all 3 sensors.reset comp light came back on code said 0/2 sensors again .what do i do now?

by in Dunnellon, FL on August 22, 2009
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2 answers
ANSWER by , March 27, 2010
Change the intake manifold gaskets.
ANSWER by , August 22, 2009
What was the exact code or code numbers stored? Were the codes stored for heater circuit or oxygen sensor performance issues?