• Register

AutoCodes.com FREE Android App
Ask OBDII Question
Please write Make, Model and Year of your vehicle

Find local automotive repair shops in your area | AutoCodes.com Local
Need A Repair Shop?
Find local automotive repair shops in your area.
AutoCodes.com Shops

34,725 questions

21,154 answers

806 comments

22,796 users

Top Users

Reynaldo 9,598 Points
Carguy1 4,959 Points
G37driver 3,517 Points
OBDIITech 2,745 Points
OBDtech2 165 Points
corvette-78 127 Points
knowledge 1488 124 Points
Lemuel Alfaro 117 Points
Samat Bekov 117 Points
ptl 113 Points

What code does bad gas cap seal set? Symptom: Erratic idle

Erratic idle: sets code p0171: replaced/repaired every symptom for code p0171. Still erratic idle @ op temp. Major problem: code will not go away. Also, possible slight miss at tail pipe during periods when idling smooth. Help!
Vehicle: 1998, ford, windstar, 3.8
asked Jan 30 by Frustrated ford owner

1 Answer

Hi there

A bad seal on the gas cap will usually set a p0455 code for an evap leak.

The P0171 code can be the result of a bad O2 sensor and several other items. I have also seen it happen due to a weak fuel injector as well.
answered 3 days ago by Carguy1 (4,959 points)
Advertisement

Related Information

Related questions

Home - About AutoCodes.com - Privacy Policy - Terms and Conditions - Copyright 2010-2016 AutoCodes.com

AutoCodes.com - HelpForCars.net - Infinitihelp.com - Nissanhelp.com
...