2003 Ford Focus ODB-II Trouble Code P0191

2003 FORD FOCUS
90,000 MILES • 4 CYL • FWD • AUTOMATIC
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DKEITH
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What is the most probable cause for this failure code.
Aug 20, 2008 at 9:34 AM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.
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