new2site info on OBD codes
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Junior Member
Joined: Mar 2011
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From: NJ
new2site info on OBD codes
I recently acquired a 1998 F150 XLT 5.4. Check Engine light came on and it turned out to be P0171 and 0174 error codes. Both manifolds have recently been replaced. Took it for inspection (NJ State ) secondary emission tests were performed they all passed. Vehicle failed because of codes. Any advise on what these codes mean? Thanks.
Last edited by KCXLT57; Mar 7, 2011 at 06:58 PM. Reason: typo
Senior Member
Joined: Jul 2007
Posts: 3,291
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From: Beaverton Or.
This may help..
https://www.f150online.com/forums/19...ric-codes.html
Search "p0171" or "p0174" and you will find a ton of information. Hopefully something specific to your issue.
You may need to clean your egr valve and throttle body (egr ports).. it is most common, along with the DPFE sensor
https://www.f150online.com/forums/19...ric-codes.html
Search "p0171" or "p0174" and you will find a ton of information. Hopefully something specific to your issue.
You may need to clean your egr valve and throttle body (egr ports).. it is most common, along with the DPFE sensor
Last edited by Toyz; Mar 7, 2011 at 07:03 PM.
Senior Member
Joined: Feb 2004
Posts: 10,390
Likes: 10
^^ yep.
And - for future reference - list of codes: https://www.f150online.com/forums/v8...-dtc-list.html
You can also plug any code into Google or this site's search engine - lots of hits.
MGD
And - for future reference - list of codes: https://www.f150online.com/forums/v8...-dtc-list.html
You can also plug any code into Google or this site's search engine - lots of hits.
MGD
