o2 sensor help
Dodge+Ford = always ready
Joined: Apr 2011
Posts: 8,376
Likes: 112
From: Montana
The only way to clear it is to have a functioning cat or a simulator circuit. I've also heard about fooling the sensor with a spacer but I don't know that much about it. A good high flow cat isn't very expensive and will clean up the exhaust without effecting performance and turn off the light so you know of something else is wrong.
https://www.f150forum.com/f72/how-tr...-sensor-47908/
Last edited by f150cam; Nov 15, 2012 at 04:28 PM.
Senior Member
Joined: Aug 2010
Posts: 2,669
Likes: 116
From: Long Beach, CA
BTW that only works for the post cat sensor. The pre cat switches constantly between rich and lean. If the ecu doesn't see the rich lean cycle its will set a rich or lean code and likely go to default.