engine code

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Nov 5, 2006 | 11:59 PM

skelly454

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Joined: Nov 2006

Posts: 89

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From: Iowa

engine code

Hello, I have a 2000 f150 lightning. The check engine light came on so I got it checked out and it said p1131, something about air fuel mixture. Anybody know what this means. thanks

skelly454

Nov 6, 2006 | 07:40 AM

projectSHO89

Senior Member

Joined: Oct 2002

Posts: 7,295

Likes: 125

From: St. Louis (Out in the woods)

Most likely time for a new upstream O2 sensor on the passenger side.

Check first for exhaust manifold leaks as that can cause a false DTC.

Steve

Nov 7, 2006 | 12:36 AM