Thread: Idle Problem Mk1 Focus RS - Fault Code P0171
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Old Oct 5, 2010 | 07:25 AM
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chaffe
Turbocharging Technician
 
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From: Top secret. Mission:Imposible.
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As above check the lambda is working/plugged in. Also check for a metered air leak, or faulty/cracked maff sensor.
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