2003 TAURUS

Question

I HAVE a 2003 Ford Taurus it failed inspection with a P1131 INDICATOR LIGTH ON. I had the sensor changed and the light still went back on after 90 miles. Car passed all other Emissions tests? What can we do to get this light to go off.

Answer 1

P1130 Fuel system not switching rich or lean Bank 1 sensor 1

Check for vacuum leaks especially at the MAF air duct tube,this also include the PCV valve for hose collapse or ruptures,This also include the coolant level in the radiator. Do a MAF(mass air flow) cleaning also