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Ford Fiesta 2013 Hatch Back P0171
- Thread starter Boss Orie v2
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- Elkhart
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- '17 ST
A P0171 code on a Ford indicates a "System Too Lean" condition on Bank 1, meaning the engine is receiving too much air or not enough fuel. Common causes include vacuum leaks, a dirty or faulty Mass Airflow (MAF) sensor, or a failing fuel pump. Key diagnostic steps include checking for vacuum leaks, cleaning the MAF sensor, and checking fuel pressure.
This video explains the causes and symptoms of the P0171 code:
Check for loose or cracked hoses, and clean your MAF sensor.
This video explains the causes and symptoms of the P0171 code:
Check for loose or cracked hoses, and clean your MAF sensor.
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