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Ford Mustang I am getting a P1131 engine code, what is that

Answered by:Ron Z.
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Customer Question

I am getting a P1131 engine code, what is that and how do I fix it?

Country: United States
Make: Ford
Model: Mustang
Year: 1999
Engine: V6

Already Tried:
Cleared code but keeps coming back. Need to fix it so it will pass safety inspection

Submitted: 725 days and 3 hours ago.

Category: Ford

Value: $15

Status: CLOSED

Accepted Answer

Expert: Ron Z. replied 725 days and 3 hours ago.

Welcome to JustAnswer.com! My name is DriveFast71(Ron) and I will do my best to answer all of your questions completely and accurately.

The most common fail item associated with the P1131 is going to be a faulty Oxygen Sensor (Bank1 Sensor1). Check the Air Filter to make sure it is not excessively dirty. Check the Air Filter housing for any signs of blockage (leaves, trash, etc). Check that there are no intake air leaks. Check for any broken, disconnected or holes in vacuum lines. If this all checks ok, suspect a faulty Oxygen Sensor.

Expert Type	- Ford Tech -
Category:	Ford
Pos. Feedback:	99.5 %
Accepts:	1496
Answered:	4/11/2011

Experience: 18+yrs experience. State Inspector & Ford Diagnostics/Repair

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Accepted Answer

Expert: Ron Z. replied 723 days and 3 hours ago.

Expert Type	- Ford Tech -
Category:	Ford
Pos. Feedback:	99.5 %
Accepts:	1496
Answered:	4/13/2011

Experience: 18+yrs experience. State Inspector & Ford Diagnostics/Repair

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