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#1
11-06-2009, 07:10 PM
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Troubleshoot JAG P0171
DTC code = P0171 - System too lean on Bank 1
The most probable cause - V6 * The PCV system , has a rubber boot elbow that go's bad. Check Forum Lincoln > LS , search Forum tool ''P0171'' , not Thread. All Air is metered going into the motor by the MAF sensor, a bad PCV elbow will cause a lean condition. Last edited by danielsatur; 11-21-2009 at 01:29 PM. 
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