Need help w/diagnostic codes
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Joined: Oct 2003
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Need help w/diagnostic codes
I have a 1998 Navigator with the check engine light on. I scanned it and it shows two trouble codes P0171 (System Adaptive fuel too lean Bank 1) and P0174 System Adaptive fuel too lean Bank 2). Any ideas on what might be causing these codes?
Postmaster
Joined: May 2002
Posts: 3,028
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From: Annapolis, Maryland
It's a notorious PCV system problem - a relatively simple and cheap repair.
Click the link in my signature and hit "send". There's a great article written in the Expedition Owner's Guide by Rtpjunior that outlines the process for repairing this.
BTW - the EOG is in adobe acrobat PDF format.
Good luck!
XXL
Click the link in my signature and hit "send". There's a great article written in the Expedition Owner's Guide by Rtpjunior that outlines the process for repairing this.
BTW - the EOG is in adobe acrobat PDF format.
Good luck!
XXL
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