2002 PONTIAC GRAND AM
147,541 MILES
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What this two sensor are for po403 and po405
Feb 13, 2013 at 8:59 PM
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WRENCHTECH
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Not quite that simple.
It's going to require some further diagnostics

P0403 Exhaust Gas Recirculation Control -Circuit Malfunction

P0405 Exhaust Gas Recirculation Sensor A -Circuit Low
Feb 13, 2013 at 9:03 PM